Work Step by Step
Perpendicular to $y=8x-1$ and passes through (4, 10) $8*m = -1$ $8*m/8 = -1/8$ $m=-1/8$ $y=mx+b$ $y=-1/8*x+b$ $10 = -1/8*4+b$ $10 = -1/2 + b$ $10+1/2= -1/2 +b + 1/2$ $21/2 = b$ $y=-1/8*x+21/2$
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