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21-02-2018
Mathematics

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Problem 1
y=-x-1, y=-2x Show work

Problem 2
y=3x+2
y=-2x+7

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21-02-2018

Problem 1:
y = -x - 1

y = -2x

Plug it in.

-2x = -x - 1

Get the x on one side.

-2x = -1x - 1
+1x +1x

Add.

-1x = - 1

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