Systems of Equations

# 6 solvethesystembelow 6x2y18 6x7y3 6x 2y 18 16x

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: -4y = 4 -4 -4 y = -1 -4x + 6y = -18 -4x + 6(-1) = -18 -4x - 6 = -18 +6 +6 -4x = -12 -4 -4 x=3 2 CHAPTER 7 TEST REVIEW ANSWER KEY PART II: Answer all questions in this part. Clearly indicate the necessary steps, including appropriate formula substitutions, calculations, etc. 6.) Solve the system below. 6x ­ 2y = 18 6x ­ 7y = 3 6x - 2y = 18 -1(6x - 7y = 3) (4, 3) 8.) 6x - 2y = 18 -6x + 7y = -3 5y = 15 5 5 y=3 Solve the system of equations below. 7.) ­4u + 9v = 9 6x - 2y = 18 u ­ 3v = ­6 6x - 2(3) = 18 6x - 6 = 18 +6 +6 6x = 24 6 6 x=4 2(4x + 3y = 7) -4u + 9v = 9 3u - 9v = -18 -1u = -9 -1 -1 u=9 u=9 v=5 3x + 2y = 4 4x + 3y = 7 -3(3x + 2y = 4) What is the solution of the system of equations below? -9x - 6y = -12 8x + 6y = 14 -1x = 2 -1 -1 x = -2...
View Full Document

## This document was uploaded on 03/19/2014 for the course MATH Integrated at Brewster High School.

Ask a homework question - tutors are online