5 7 8 9 41x 2y 4 4x 8y 12 onesolution twosolutions

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Unformatted text preview: es are y = 1.) 9 8 7 6 5 4 3 2 1 ­9 ­8 ­7­6 ­5 ­4 ­3 ­2 ­1 0 1 2 3 4 5 6 7 8 9 ­1 ­2 ­3 ­4 y = ­1 ­5 2 x ­6 ­ 7 .5 ­7 ­8 ­9 -4(1x - 2y = -4) 4x - 8y = -12 One Solution Two Solutions No Solution Infinitely Many Solutions -4x + 8y = 16 4x - 8y = -12 0=4 No! What is the value of y in the following system of equations? 2x + y = 8 x ­ 3y = ­3 a.) b.) ­2 2 3(2x + 1y = 8) 1x - 3y = -3 c.) d.) 3 ­3 6x + 3y = 24 1x - 3y = -3 7x = 21 77 x=3 2x + y = 8 2(3) + y = 8 6+y=8 -6 -6 y=2 1 CHAPTER 7 TEST REVIEW ANSWER KEY 4.) Kendra owns a restaurant. She decides to cha...
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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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