If y - 8 = 15, y = 23
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8-15/y
7 and 8Since:x+y=15 or x=15-yxy=56so that y(15-y)=5615y-y2=56y2-15y+56=0(y-7)(y-8)=0which makes y=8 or y=7
y = slope × x + intercept → y = -0.5x + 15 → y = -0.5 × 8 + 15 = -4 + 15 = 11
71
x=4 y=1