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24. Slope 7 y intercept 9 72 2

24. Slope 7 y intercept 9 72 2

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter8: Linear Functions
Section8.4: The Slope Of A Line
Problem 12E
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In Problems 21-24, write an equation of the line with the indi- cated slope and y intercept. 21. Slope = 2 y intercept 23. Slope y intercept 27. TA = 1 -3x 1 3 = 6 29. y = 31. 3x - 2y = y y intercept B In Problems 25-28, use the graph of each line to find the x inter- cept, y intercept, and slope. Write the slope-intercept form of the equation of the line. 25. 5 - 2 22. Slope = 1 y intercept x- 24. Slope = 10 26. = 28. In Problems 29-34, sketch a graph of each equation or pair of equations in a rectangular coordinate system. 30. y = 32. 5x 6 7 = 5 9 2 -2x + 1 6y = 15 X 43. Graph y = 25x + 200, x ≥ 0. 44. Graph y 40x + 160, x ≥ 0. 45. (A) Graph y = 1.2x - 4.2 in a rectangular coordinate system. (B) Find the x and y intercepts algebraically to one decimal place. (C) Graph y = 1.2x – 4.2 in a graphing calculator. (D) Find the x and y intercepts to one decimal place using TRACE and the ZERO command. 46. (A) Graph y = −0.8x + 5.2 in a rectangular coordinate system. (B) Find the x and y intercepts algebraically to one decimal place. (C) Graph y = -0.8x + 5.2 in a graphing calculator. (D) Find the x and y intercepts to one decimal place using TRACE and the ZERO command. In Problems 47-50, write the equations of the vertical and hori- zontal lines through each point. 47. (4, -3) 49. (-1.5, -3.5) 48. (-5,6) 50. (2.6, 3.8) CIn Problems 51-58, write the slope-intercept form of the equation of the line with the indicated slope that goes through the given point. 51. m = 5; (3,0) 52. m = 4; (0,6) 53. m = -2; (-1,9) 54. m = -10; (2, −5) 2 1 55. m = 3' (-4,-8) 56.m= ; (7,1) 57. m = -3.2; (5.8, 12.3) 58. m = 0.9; (2.3, 6.7) In Problems 59-66, (A) Find the slope of the line that passes through the given points. (B) Find the standard form of the equation of the line. < 23 / 606 >
Transcribed Image Text:In Problems 21-24, write an equation of the line with the indi- cated slope and y intercept. 21. Slope = 2 y intercept 23. Slope y intercept 27. TA = 1 -3x 1 3 = 6 29. y = 31. 3x - 2y = y y intercept B In Problems 25-28, use the graph of each line to find the x inter- cept, y intercept, and slope. Write the slope-intercept form of the equation of the line. 25. 5 - 2 22. Slope = 1 y intercept x- 24. Slope = 10 26. = 28. In Problems 29-34, sketch a graph of each equation or pair of equations in a rectangular coordinate system. 30. y = 32. 5x 6 7 = 5 9 2 -2x + 1 6y = 15 X 43. Graph y = 25x + 200, x ≥ 0. 44. Graph y 40x + 160, x ≥ 0. 45. (A) Graph y = 1.2x - 4.2 in a rectangular coordinate system. (B) Find the x and y intercepts algebraically to one decimal place. (C) Graph y = 1.2x – 4.2 in a graphing calculator. (D) Find the x and y intercepts to one decimal place using TRACE and the ZERO command. 46. (A) Graph y = −0.8x + 5.2 in a rectangular coordinate system. (B) Find the x and y intercepts algebraically to one decimal place. (C) Graph y = -0.8x + 5.2 in a graphing calculator. (D) Find the x and y intercepts to one decimal place using TRACE and the ZERO command. In Problems 47-50, write the equations of the vertical and hori- zontal lines through each point. 47. (4, -3) 49. (-1.5, -3.5) 48. (-5,6) 50. (2.6, 3.8) CIn Problems 51-58, write the slope-intercept form of the equation of the line with the indicated slope that goes through the given point. 51. m = 5; (3,0) 52. m = 4; (0,6) 53. m = -2; (-1,9) 54. m = -10; (2, −5) 2 1 55. m = 3' (-4,-8) 56.m= ; (7,1) 57. m = -3.2; (5.8, 12.3) 58. m = 0.9; (2.3, 6.7) In Problems 59-66, (A) Find the slope of the line that passes through the given points. (B) Find the standard form of the equation of the line. < 23 / 606 >
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