Use back-substitution in one of the equations in two variables to find the value of the second variable. We back-substitute -1 for x in either Equation 4 or 5 to find the value of y. We will use Equation 5. -13x + y = 15 Equation 5 -13(-1) + y = 15 Substitute -1 for x. 13 + y = 15 Multiply. y = 2 Subtract 13 from both sides.
Use back-substitution in one of the equations in two variables to find the value of the second variable. We back-substitute -1 for x in either Equation 4 or 5 to find the value of y. We will use Equation 5. -13x + y = 15 Equation 5 -13(-1) + y = 15 Substitute -1 for x. 13 + y = 15 Multiply. y = 2 Subtract 13 from both sides.
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Question
![Use back-substitution in one of the equations in two variables to find the value
of the second variable. We back-substitute -1 for x in either Equation 4 or 5 to find
the value of y. We will use Equation 5.
-13x + y = 15
Equation 5
-13(-1) + y = 15
Substitute -1 for x.
13 + y = 15
Multiply.
y = 2
Subtract 13 from both sides.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4e7caf2e-be04-4f6d-b5f6-12dd3acf7fbb%2F99b8421f-0cbb-44c5-9a13-26c3c5095182%2Ft7seny_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Use back-substitution in one of the equations in two variables to find the value
of the second variable. We back-substitute -1 for x in either Equation 4 or 5 to find
the value of y. We will use Equation 5.
-13x + y = 15
Equation 5
-13(-1) + y = 15
Substitute -1 for x.
13 + y = 15
Multiply.
y = 2
Subtract 13 from both sides.
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