determine whether each relation is a function y equals -8
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y = 8 - 2*x
5x - 8 = yWhen y = 1,5x - 8 = 1Add 8 to each side of the equation:5x = 9Divide each side by 5:x = 9/5 = 1.8
y - |x| is an expression, not a function.
If you plug in y for the x function, and it equals the answer you got, it is right.
x=y-8 z=x+12