Solving systems help? Y=4x-9 Y=x-3

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asked May 5, 2015 161k views

5 votes

Solving systems help?
Y=4x-9
Y=x-3

Mathematics
high-school

Xqwzts asked

by Xqwzts

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1 Answer

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$\left\{\begin{array}{ccc}y=4x-9\\y=x-39\end{array}\right\\\\substitute:\\\\4x-9=x-39\\4x-x=-39+9\\3x=-30\\x=-30:3\\x=-10\\\\y=-10-39=-49\\\\Answer:x=-10\ and\ y=-49\to(-10;-49)$

Solving systems help? Y=4x-9 Y=x-3-example-1

Kaysa answered May 10, 2015

by Kaysa

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