SOLUTION: solve the systems y=-x and y=4x-8

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Question 189387: solve the systems y=-x and y=4x-8
Answer by Mathtut(3670) About Me  (Show Source):
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solve the systems y=-x and y=4x-8
:
take y's value in 1st eq and plug it into 2nd eq
:
-x=4x-8
:
5x=8
:
x=8/5
:
now plug this back into either eq. I will use y=-x
:
y=-8/5
:
so (8/5,-8/5)