Im kind of confused on what to do at this point.
-5x+8 vs x-4
first, lets separate the 2 functions.
f(x) can be replaced by y
f(x)= -5x+8
x=1 y=3
x=2 y=-2
x=3 y=-7
f(x)= x-4
x= 1 y=-3
x=2 y=-2
x=3 y=-1
the equations intercept at 2,-2
f(x)= x-4 is the greater equation if the linear equation is above the other equations plotted lines.
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