y=-3x+5
1) x=4
y=-3*4+5= -12+5= -7
2) y=8
8=-3x+5
8-5=-3x
3=-3x
x= -1
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Verified answer
y=-3x+5
1) x=4
y=-3*4+5= -12+5= -7
2) y=8
8=-3x+5
8-5=-3x
3=-3x
x= -1