The Graph looks like this.
Work Step by Step
h: x=0,y=4*0=0 x=1, y=4*1=4 x=-1,y=4*1=4 .. g: x=0, y=0,2*0=0 x=1,y=0,2*1=0,2 x=5, y=0,2*5=1 ..
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