Beginning and Intermediate Algebra
Beginning and Intermediate Algebra
4th Edition
ISBN: 9780073384511
Author: Julie Miller, Molly O'Neill, Nancy Hyde
Publisher: MCGRAW-HILL HIGHER EDUCATION
bartleby

Videos

Textbook Question
Book Icon
Chapter 13, Problem 7CRE

Solve the system.

x + y                       = − 1 2 x                       −       z = 3 y + 2 z = − 1

Expert Solution & Answer
Check Mark

Want to see the full answer?

Check out a sample textbook solution
Blurred answer
Previous
Chapter 13, Problem 6CRE
Next
Chapter 13, Problem 8CRE

Chapter 13 Solutions

Beginning and Intermediate Algebra

Ch. 13.1 - Find the distance between the points ( − 4 , − 2 )...Ch. 13.1 - Prob. 2SPCh. 13.1 - Prob. 3SPCh. 13.1 - Prob. 4SPCh. 13.1 - Prob. 5SPCh. 13.1 - Prob. 6SPCh. 13.1 - Prob. 7SPCh. 13.1 - Prob. 8SPCh. 13.1 - Prob. 1PECh. 13.1 - Prob. 2PE
Ch. 13.1 - Prob. 3PECh. 13.1 - Prob. 4PECh. 13.1 - Prob. 5PECh. 13.1 - Prob. 6PECh. 13.1 - Prob. 7PECh. 13.1 - Prob. 8PECh. 13.1 - Prob. 9PECh. 13.1 - Prob. 10PECh. 13.1 - Prob. 11PECh. 13.1 - Prob. 12PECh. 13.1 - Prob. 13PECh. 13.1 - Prob. 14PECh. 13.1 - Prob. 15PECh. 13.1 - Prob. 16PECh. 13.1 - Prob. 17PECh. 13.1 - Prob. 18PECh. 13.1 - Prob. 19PECh. 13.1 - Prob. 20PECh. 13.1 - Prob. 21PECh. 13.1 - Prob. 22PECh. 13.1 - Prob. 23PECh. 13.1 - Prob. 24PECh. 13.1 - Prob. 25PECh. 13.1 - Prob. 26PECh. 13.1 - Prob. 27PECh. 13.1 - Prob. 28PECh. 13.1 - Prob. 29PECh. 13.1 - Prob. 30PECh. 13.1 - Prob. 31PECh. 13.1 - Prob. 32PECh. 13.1 - Prob. 33PECh. 13.1 - Prob. 34PECh. 13.1 - Prob. 35PECh. 13.1 - Prob. 36PECh. 13.1 - Prob. 37PECh. 13.1 - Prob. 38PECh. 13.1 - Prob. 39PECh. 13.1 - Prob. 40PECh. 13.1 - Prob. 41PECh. 13.1 - Prob. 42PECh. 13.1 - Prob. 43PECh. 13.1 - Prob. 44PECh. 13.1 - Prob. 45PECh. 13.1 - Prob. 46PECh. 13.1 - Prob. 47PECh. 13.1 - Prob. 48PECh. 13.1 - For Exercises 49–54, write an equation that...Ch. 13.1 - Prob. 50PECh. 13.1 - Prob. 51PECh. 13.1 - Prob. 52PECh. 13.1 - Prob. 53PECh. 13.1 - Prob. 54PECh. 13.1 - Prob. 55PECh. 13.1 - Prob. 56PECh. 13.1 - Prob. 57PECh. 13.1 - Prob. 58PECh. 13.1 - Prob. 59PECh. 13.1 - Prob. 60PECh. 13.1 - Prob. 61PECh. 13.1 - Prob. 62PECh. 13.1 - Prob. 63PECh. 13.1 - Prob. 64PECh. 13.1 - Prob. 65PECh. 13.1 - Prob. 66PECh. 13.1 - Prob. 67PECh. 13.1 - Prob. 68PECh. 13.1 - Prob. 69PECh. 13.1 - For Exercises 65–72, find the midpoint of the line...Ch. 13.1 - For Exercise 65-72, find the midpoint of the line...Ch. 13.1 - For Exercise 65-72, find the midpoint of the line...Ch. 13.1 - Prob. 73PECh. 13.1 - Prob. 74PECh. 13.1 - For Exercises 75–78, the two given points are...Ch. 13.1 - Prob. 76PECh. 13.1 - Prob. 77PECh. 13.1 - Prob. 78PECh. 13.1 - Prob. 79PECh. 13.1 - Prob. 80PECh. 13.1 - Prob. 81PECh. 13.1 - Prob. 82PECh. 13.1 - Prob. 83PECh. 13.1 - Prob. 84PECh. 13.1 - Prob. 85PECh. 13.1 - Prob. 86PECh. 13.1 - Prob. 87PECh. 13.1 - Prob. 88PECh. 13.2 - Prob. 1SPCh. 13.2 - Prob. 2SPCh. 13.2 - Prob. 3SPCh. 13.2 - Prob. 4SPCh. 13.2 - Prob. 5SPCh. 13.2 - Prob. 6SPCh. 13.2 - Prob. 7SPCh. 13.2 - Prob. 8SPCh. 13.2 - Prob. 9SPCh. 13.2 - Prob. 10SPCh. 13.2 - Prob. 11SPCh. 13.2 - 1. a. A circle, a parabola, an ellipse, and a...Ch. 13.2 - Prob. 2PECh. 13.2 - Prob. 3PECh. 13.2 - Prob. 4PECh. 13.2 - Prob. 5PECh. 13.2 - Prob. 6PECh. 13.2 - Prob. 7PECh. 13.2 - Prob. 8PECh. 13.2 - Prob. 9PECh. 13.2 - Prob. 10PECh. 13.2 - Prob. 11PECh. 13.2 - Prob. 12PECh. 13.2 - Prob. 13PECh. 13.2 - Prob. 14PECh. 13.2 - Prob. 15PECh. 13.2 - Prob. 16PECh. 13.2 - Prob. 17PECh. 13.2 - Prob. 18PECh. 13.2 - Prob. 19PECh. 13.2 - Prob. 20PECh. 13.2 - Prob. 21PECh. 13.2 - Prob. 22PECh. 13.2 - Prob. 23PECh. 13.2 - Prob. 24PECh. 13.2 - Prob. 25PECh. 13.2 - For Exercises 25–33, determine the vertex by using...Ch. 13.2 - Prob. 27PECh. 13.2 - Prob. 28PECh. 13.2 - Prob. 29PECh. 13.2 - Prob. 30PECh. 13.2 - Prob. 31PECh. 13.2 - Prob. 32PECh. 13.2 - Prob. 33PECh. 13.2 - Prob. 34PECh. 13.2 - Prob. 35PECh. 13.2 - Prob. 36PECh. 13.2 - Prob. 37PECh. 13.2 - Prob. 38PECh. 13.2 - Prob. 39PECh. 13.2 - Prob. 40PECh. 13.2 - Prob. 41PECh. 13.2 - Prob. 42PECh. 13.2 - Prob. 43PECh. 13.2 - Prob. 44PECh. 13.2 - Prob. 45PECh. 13.2 - Prob. 46PECh. 13.2 - Prob. 47PECh. 13.2 - Prob. 48PECh. 13.2 - Prob. 49PECh. 13.3 - Prob. 1SPCh. 13.3 - Prob. 2SPCh. 13.3 - Prob. 3SPCh. 13.3 - Prob. 4SPCh. 13.3 - Prob. 5SPCh. 13.3 - Prob. 1PECh. 13.3 - Prob. 2PECh. 13.3 - Prob. 3PECh. 13.3 - Prob. 4PECh. 13.3 - Prob. 5PECh. 13.3 - Prob. 6PECh. 13.3 - Prob. 7PECh. 13.3 - Prob. 8PECh. 13.3 - Prob. 9PECh. 13.3 - Prob. 10PECh. 13.3 - Prob. 11PECh. 13.3 - Prob. 12PECh. 13.3 - Prob. 13PECh. 13.3 - Prob. 14PECh. 13.3 - Prob. 15PECh. 13.3 - Prob. 16PECh. 13.3 - Prob. 17PECh. 13.3 - Prob. 18PECh. 13.3 - Prob. 19PECh. 13.3 - Prob. 20PECh. 13.3 - Prob. 21PECh. 13.3 - Prob. 22PECh. 13.3 - Prob. 23PECh. 13.3 - Prob. 24PECh. 13.3 - Prob. 25PECh. 13.3 - Prob. 26PECh. 13.3 - Prob. 27PECh. 13.3 - Prob. 28PECh. 13.3 - Prob. 29PECh. 13.3 - Prob. 30PECh. 13.3 - Prob. 31PECh. 13.3 - Prob. 32PECh. 13.3 - Prob. 33PECh. 13.3 - Prob. 34PECh. 13.3 - Prob. 35PECh. 13.3 - Prob. 36PECh. 13.3 - Prob. 37PECh. 13.3 - Prob. 38PECh. 13.3 - For Exercises 33–40, use the equation in standard...Ch. 13.3 - Prob. 40PECh. 13.3 - Prob. 41PECh. 13.3 - Prob. 42PECh. 13.3 - Prob. 43PECh. 13.3 - Prob. 44PECh. 13.3 - Prob. 45PECh. 13.3 - Prob. 46PECh. 13.3 - Prob. 47PECh. 13.3 - Prob. 48PECh. 13.3 - Prob. 49PECh. 13.3 - Prob. 50PECh. 13.3 - Prob. 51PECh. 13.3 - Prob. 52PECh. 13.3 - Prob. 53PECh. 13.3 - Prob. 54PECh. 13.3 - Prob. 55PECh. 13.3 - Prob. 56PECh. 13.3 - Prob. 57PECh. 13.3 - Prob. 58PECh. 13.3 - Prob. 1PRECh. 13.3 - For Exercises 1–8, identify the formula. x 2 a 2 +...Ch. 13.3 - Prob. 3PRECh. 13.3 - Prob. 4PRECh. 13.3 - Prob. 5PRECh. 13.3 - Prob. 6PRECh. 13.3 - Prob. 7PRECh. 13.3 - Prob. 8PRECh. 13.3 - Prob. 9PRECh. 13.3 - Prob. 10PRECh. 13.3 - Prob. 11PRECh. 13.3 - Prob. 12PRECh. 13.3 - Prob. 13PRECh. 13.3 - Prob. 14PRECh. 13.3 - Prob. 15PRECh. 13.3 - Prob. 16PRECh. 13.3 - Prob. 17PRECh. 13.3 - Prob. 18PRECh. 13.3 - Prob. 19PRECh. 13.3 - Prob. 20PRECh. 13.3 - Prob. 21PRECh. 13.3 - Prob. 22PRECh. 13.3 - Prob. 23PRECh. 13.3 - Prob. 24PRECh. 13.3 - Prob. 25PRECh. 13.3 - Prob. 26PRECh. 13.3 - Prob. 27PRECh. 13.3 - Prob. 28PRECh. 13.3 - Prob. 29PRECh. 13.3 - Prob. 30PRECh. 13.4 - Given the system 2 x + y = 5 x 2 + y 2 = 50 Solve...Ch. 13.4 - Prob. 2SPCh. 13.4 - Prob. 3SPCh. 13.4 - Prob. 4SPCh. 13.4 - Solve the system by using the substitution method....Ch. 13.4 - Prob. 6SPCh. 13.4 - 1. a. A _______ system of equations in two...Ch. 13.4 - Prob. 2PECh. 13.4 - Prob. 3PECh. 13.4 - Prob. 4PECh. 13.4 - Prob. 5PECh. 13.4 - Prob. 6PECh. 13.4 - Prob. 7PECh. 13.4 - Prob. 8PECh. 13.4 - Prob. 9PECh. 13.4 - Prob. 10PECh. 13.4 - Prob. 11PECh. 13.4 - Prob. 12PECh. 13.4 - Prob. 13PECh. 13.4 - Prob. 14PECh. 13.4 - Prob. 15PECh. 13.4 - Prob. 16PECh. 13.4 - For Exercises 17–22, sketch each system of...Ch. 13.4 - Prob. 18PECh. 13.4 - Prob. 19PECh. 13.4 - Prob. 20PECh. 13.4 - Prob. 21PECh. 13.4 - Prob. 22PECh. 13.4 - Prob. 23PECh. 13.4 - Prob. 24PECh. 13.4 - Prob. 25PECh. 13.4 - Prob. 26PECh. 13.4 - Prob. 27PECh. 13.4 - Prob. 28PECh. 13.4 - Prob. 29PECh. 13.4 - Prob. 30PECh. 13.4 - Prob. 31PECh. 13.4 - Prob. 32PECh. 13.4 - Prob. 33PECh. 13.4 - Prob. 34PECh. 13.4 - Prob. 35PECh. 13.4 - Prob. 36PECh. 13.4 - Prob. 37PECh. 13.4 - For Exercises 32–48, solve the system of nonlinear...Ch. 13.4 - For Exercises 32–48, solve the system of nonlinear...Ch. 13.4 - Prob. 40PECh. 13.4 - Prob. 41PECh. 13.4 - Prob. 42PECh. 13.4 - Prob. 43PECh. 13.4 - Prob. 44PECh. 13.4 - Prob. 45PECh. 13.4 - Prob. 46PECh. 13.4 - Prob. 47PECh. 13.4 - For Exercises 32–48, solve the system of nonlinear...Ch. 13.4 - Prob. 49PECh. 13.4 - Prob. 50PECh. 13.4 - Prob. 51PECh. 13.4 - Prob. 52PECh. 13.4 - Prob. 53PECh. 13.4 - Prob. 54PECh. 13.4 - Prob. 55PECh. 13.4 - Prob. 56PECh. 13.4 - Prob. 57PECh. 13.4 - Prob. 58PECh. 13.5 - Graph the solution set of the inequality. x 2 + y...Ch. 13.5 - Prob. 2SPCh. 13.5 - Prob. 3SPCh. 13.5 - Prob. 4SPCh. 13.5 - Prob. 1PECh. 13.5 - Prob. 2PECh. 13.5 - Prob. 3PECh. 13.5 - Prob. 4PECh. 13.5 - Prob. 5PECh. 13.5 - Prob. 6PECh. 13.5 - Prob. 7PECh. 13.5 - Prob. 8PECh. 13.5 - For Exercises 1–12, match the equation with its...Ch. 13.5 - Prob. 10PECh. 13.5 - Prob. 11PECh. 13.5 - For Exercises 1–12, match the equation with its...Ch. 13.5 - Prob. 13PECh. 13.5 - Prob. 14PECh. 13.5 - Prob. 15PECh. 13.5 - Prob. 16PECh. 13.5 - a. Graph the solution set for x 2 + y 2 ≤ 9 . b....Ch. 13.5 - a. Graph the solution set for x 2 4 + y 2 9 ≥ 1....Ch. 13.5 - 19. a. Graph the solution set for. b. How would...Ch. 13.5 - 20. a. Graph the solution set for b. How...Ch. 13.5 - Prob. 21PECh. 13.5 - 22. A coordinate system is placed at the center of...Ch. 13.5 - For Exercises 23–37, graph the solution set. (See...Ch. 13.5 - For Exercises 23–37, graph the solution set. (See...Ch. 13.5 - Prob. 25PECh. 13.5 - For Exercises 23–37, graph the solution set. (See...Ch. 13.5 - Prob. 27PECh. 13.5 - Prob. 28PECh. 13.5 - Prob. 29PECh. 13.5 - Prob. 30PECh. 13.5 - Prob. 31PECh. 13.5 - Prob. 32PECh. 13.5 - Prob. 33PECh. 13.5 - Prob. 34PECh. 13.5 - For Exercises 23–37, graph the solution set. (See...Ch. 13.5 - For Exercises 23–37, graph the solution set. (See...Ch. 13.5 - Prob. 37PECh. 13.5 - For Exercises 38–51, graph the solution set to the...Ch. 13.5 - Prob. 39PECh. 13.5 - Prob. 40PECh. 13.5 - Prob. 41PECh. 13.5 - Prob. 42PECh. 13.5 - Prob. 43PECh. 13.5 - Prob. 44PECh. 13.5 - Prob. 45PECh. 13.5 - Prob. 46PECh. 13.5 - Prob. 47PECh. 13.5 - Prob. 48PECh. 13.5 - Prob. 49PECh. 13.5 - Prob. 50PECh. 13.5 - Prob. 51PECh. 13.5 - Prob. 52PECh. 13.5 - Prob. 53PECh. 13.5 - Prob. 54PECh. 13.5 - Prob. 55PECh. 13 - For Exercises 1-2, find the distance between the...Ch. 13 - For Exercises 1-2, find the distance between the...Ch. 13 - Find x such that ( x , 5 ) is 5 units from ( 2 , 9...Ch. 13 - 4. Find x such that is 3 units from Ch. 13 - Prob. 5RECh. 13 - For Exercises 5–8, find the center and the radius...Ch. 13 - Prob. 7RECh. 13 - For Exercises 5–8, find the center and the radius...Ch. 13 - Prob. 9RECh. 13 - For Exercises 10–13, write the equation of the...Ch. 13 - Prob. 11RECh. 13 - Prob. 12RECh. 13 - Prob. 13RECh. 13 - Prob. 14RECh. 13 - Prob. 15RECh. 13 - For Exercises 16–17, find the midpoint of the...Ch. 13 - For Exercises 16–17, find the midpoint of the...Ch. 13 - For Exercises 18–21, determine whether the axis of...Ch. 13 - For Exercises 18–21, determine whether the axis of...Ch. 13 - For Exercises 18–21, determine whether the axis of...Ch. 13 - For Exercises 18–21, determine whether the axis of...Ch. 13 - For Exercises 22–25, determine the coordinates of...Ch. 13 - For Exercises 22–25, determine the coordinates of...Ch. 13 - For Exercises 22–25, determine the coordinates of...Ch. 13 - For Exercises 22–25, determine the coordinates of...Ch. 13 - For Exercises 26–29, write the equation in...Ch. 13 - For Exercises 26–29, write the equation in...Ch. 13 - For Exercises 26–29, write the equation in...Ch. 13 - For Exercises 26–29, write the equation in...Ch. 13 - For Exercises 30–31, identify the x- and...Ch. 13 - For Exercises 30–31, identify the x- and...Ch. 13 - For Exercises 32–33, identify the center of the...Ch. 13 - For Exercises 32–33, identify the center of the...Ch. 13 - For Exercises 34–37, determine whether the...Ch. 13 - For Exercises 34–37, determine whether the...Ch. 13 - For Exercises 34–37, determine whether the...Ch. 13 - For Exercises 34–37, determine whether the...Ch. 13 - For Exercises 38–39, graph the hyperbola by first...Ch. 13 - For Exercises 38–39, graph the hyperbola by first...Ch. 13 - For Exercises 40–43, identify the equations as...Ch. 13 - For Exercises 40–43, identify the equations as...Ch. 13 - For Exercises 40–43, identify the equations as...Ch. 13 - For Exercises 40–43, identify the equations as...Ch. 13 - For Exercises 44–47, a. Identify each equation as...Ch. 13 - For Exercises 44–47, a. Identify each equation as...Ch. 13 - For Exercises 44–47, a. Identify each equation as...Ch. 13 - For Exercises 44–47, a. Identify each equation as...Ch. 13 - For Exercises 48–53, solve the system of nonlinear...Ch. 13 - For Exercises 48–53, solve the system of nonlinear...Ch. 13 - For Exercises 48–53, solve the system of nonlinear...Ch. 13 - For Exercises 48–53, solve the system of nonlinear...Ch. 13 - For Exercises 48–53, solve the system of nonlinear...Ch. 13 - For Exercises 48–53, solve the system of nonlinear...Ch. 13 - For Exercises 54–59, graph the solution set to the...Ch. 13 - For Exercises 54–59, graph the solution set to the...Ch. 13 - For Exercises 54–59, graph the solution set to the...Ch. 13 - For Exercises 54–59, graph the solution set to the...Ch. 13 - For Exercises 54–59, graph the solution set to the...Ch. 13 - For Exercises 54–59, graph the solution set to the...Ch. 13 - For Exercises 60–61, graph the solution set to the...Ch. 13 - For Exercises 60–61, graph the solution set to the...Ch. 13 - 1. Use the distance formula to find the distance...Ch. 13 - Prob. 2TCh. 13 - Prob. 3TCh. 13 - Prob. 4TCh. 13 - 5. Find the center of the circle that has a...Ch. 13 - Determine the vertex and the equation of the axis...Ch. 13 - Write the equation in standard form y = a ( x − h...Ch. 13 - 8. Graph the ellipse. Ch. 13 - 9. Graph the ellipse. Ch. 13 - Graph the hyperbola. y 2 − x 2 4 = 1Ch. 13 - For Exercises 11–12, solve the system and identify...Ch. 13 - For Exercises 11–12, solve the system and identify...Ch. 13 - Describe the circumstances in which a nonlinear...Ch. 13 - 14. Solve the system by using either the...Ch. 13 - For Exercises 15–18, graph the solution...Ch. 13 - For Exercises 15–18, graph the solution...Ch. 13 - For Exercises 15–18, graph the solution set. x < y...Ch. 13 - For Exercises 15–18, graph the solution set. y < x...Ch. 13 - Solve. 5 ( 2 y − 1 ) = 2 y − 4 + 8 y − 1Ch. 13 - Solve the inequality. Graph the solution and write...Ch. 13 - The product of two integers is 150. If one integer...Ch. 13 - For 5 y − 3 x − 15 = 0 , a. Find the x- and...Ch. 13 - Find the slope and y-intercept of 3 x − 4 y = 6.Ch. 13 - 6. A collection of dimes and quarters has a total...Ch. 13 - Solve the system. x + y                       = −...Ch. 13 - 8. Solve the system. Ch. 13 - Solve by using the Gauss-Jordan method. 3 x − 4 y...Ch. 13 - 10. For find the function values and. Ch. 13 - 11. Solve the inequality. Ch. 13 - 12. The quantity z varies jointly as y and as the...Ch. 13 - 13. For find Ch. 13 - a. Find the value of the expression x 3 + x 2 + x...Ch. 13 - Factor completely. x 2 − y 2 − 6 x − 6 yCh. 13 - 16. Multiply. Ch. 13 - Solve. 2 x ( x − 7 ) = x − 18Ch. 13 - Simplify. 3 a 2 − a − 2 3 a 2 + 8 a + 4Ch. 13 - Subtract. 2 x + 3 − x x − 2Ch. 13 - 20. Solve. Ch. 13 - Prob. 21CRECh. 13 - For Exercises 22–23, perform the indicated...Ch. 13 - For Exercises 22–23, perform the indicated...Ch. 13 - Find the length of the missing side.Ch. 13 - An automobile starts from rest and accelerates at...Ch. 13 - Solve the equation 125 w 2 + 1 = 0 by factoring...Ch. 13 - 27. Solve. Ch. 13 - 28. Find the coordinates of the vertex of the...Ch. 13 - Graph the quadratic function defined by g ( x ) =...Ch. 13 - 30. Solve the inequality and write the answer in...Ch. 13 - Solve the inequality. | 2 x − 5 | ≥ 4Ch. 13 - Write the expression in logarithmic form. 8 5 / 3...Ch. 13 - Solve. 5 2 = 125 xCh. 13 - 34. For Ch. 13 - Prob. 35CRECh. 13 - 36. Graph the ellipse. Ch. 13 - 37. Determine the center of the circle, given the...Ch. 13 - 38. Solve the system of nonlinear equations. Ch. 13 - 39. Graph the solution set. Ch. 13 - Graph the solution set to this system. y > ( 1 2 )...
Knowledge Booster
Background pattern image
Algebra
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, algebra and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Text book image
Big Ideas Math A Bridge To Success Algebra 1: Stu...
Algebra
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:Houghton Mifflin Harcourt
Text book image
Intermediate Algebra
Algebra
ISBN:9780998625720
Author:Lynn Marecek
Publisher:OpenStax College
Text book image
Elementary Algebra
Algebra
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:OpenStax - Rice University
Text book image
Algebra: Structure And Method, Book 1
Algebra
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:McDougal Littell
Text book image
College Algebra
Algebra
ISBN:9781337282291
Author:Ron Larson
Publisher:Cengage Learning
Text book image
Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
SEE MORE TEXTBOOKS
UG/ linear equation in linear algebra; Author: The Gate Academy;https://www.youtube.com/watch?v=aN5ezoOXX5A;License: Standard YouTube License, CC-BY
System of Linear Equations-I; Author: IIT Roorkee July 2018;https://www.youtube.com/watch?v=HOXWRNuH3BE;License: Standard YouTube License, CC-BY