SOLUTION: y= -3x y= x-8 Solving linear equations using the substitution method

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Question 580326: y= -3x
y= x-8
Solving linear equations using the substitution method
Answer by mananth(16946) About Me  (Show Source):
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y= -3x
y= x-8
substitute y in the second equation
-3x=x-8
add -x to both sides
-4x=-8
/-4
x=2
plug x =2 in y=-3x
y=-3*2
y=-6