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Geography
HarlandSualevai
Sep 4, 2018, 12:17:00 AM
21

Solve the following system by using substitution: 3y=6x+9 and y=4x+9

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(1) Answers
earley333
Sep 4, 2018, 4:20:05 AM

x=-3, and Y=-3. First, get Y by itself so 3y=6x+9 will be Y=2x+3, then set the equations equal. Then you can solve for x. Then Substitute x=-3 in for x and you will get Y=-3.

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