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

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

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