02_02_task.docx.pdf - 2.02 Systems of Two Equations...

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2.02 Systems of Two Equations Algebraically Solve each system by substitution. You must show your work to receive credit! 1. y = 2x -1 6x – 3y = 7 Solution: no solution Work: y=2x-1 6x-3(2x-1)= 7 6x-6x+3=7 3=7 2. 2x + y = 9 -7x + 8y = -20 Solution: (4,1) Work: -7x+8y=-20 -7x+8(-2x+9)+-20 -23x=-92 x=4 y=-2(4) + 9 y=1 Solve each system by elimination. You must show your work to receive credit!

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