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Systems of Equations

# Systems of Equations - Name WordProblems Date...

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CHAPTER 7 TEST REVIEW ANSWER KEY 1 PART I: Answer all questions in this part. Circle the number representing your response. 2.) How many solutions does the system of equations below have? x ­ 2y = ­4 4x ­ 8y = ­12 a.) One Solution b.) Two Solutions c.) No Solution d.) Infinitely Many Solutions 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 0 ­1 ­2 ­3 ­4 ­5 ­6 ­7 ­8 ­9 ­1 ­2 ­3 ­4 ­5 ­6 ­7 ­8 ­9 y x 1.) When drawn on the same set of axes, the graph of the equations y = 3x ­ 4 and y = x ­ 7.5 intersect at the point whose coordinates are a.) (1, ­7) c.) (­7, ­1) b.) (­7, 1) d.) (­1, ­7) y=3x­4 y=x­7.5 ­1 2 ­1 2 -4(1x - 2y = -4) 4x - 8y = -12 -4x + 8y = 16 4x - 8y = -12 0 = 4 No! 3(2x + 1y = 8) 1x - 3y = -3 6x + 3y = 24 1x - 3y = -3 7x = 21 7 7 x = 3 2x + y = 8 2(3) + y = 8 6 + y = 8 - 6 - 6 y = 2 3.) What is the value of y in the following system of equations? 2x + y = 8 x ­ 3y = ­3 (-1, -7) Name ____________________________ Date _____________ Test Review ­ Solving Systems Of Equations, Int. Algebra ­ Class ______ Word Problems

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