3/4 x+4=y it's a straight line To graph it we need two distinct points of it. We can pick arbitrary values of x, say x=0 and x=4: y(0)=4 y(4)=3/4*4+4=7 So we have two points (0,4) and (4,7). Connecting them we get desired graph. To find inverse we should solve given equation for x: 3/4x+4=y 3/4x=y-4 x=4/3(y-4)=4/3y-16/3 It's also a straight line. We can find its graph similarly.
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