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Solve the system by substitution.

-2x=y
4x+10y=16

1 Answer

9 votes

Answer:

x=-1, y=2

Explanation:

Plug the y=-2x into the second equation in place of the y to get 4x+10(-2x)=16

Simplify this to 4x-20x=16 then to -16x=16

Divide both side by -16 to get x=-1

Plug x=-1 into the first equation to get -2(-1)=y

Simplify to get y=2

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