SOLUTION: what is perpendicular to y = 8x - 1, through (4,10)

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Question 382005: what is perpendicular to y = 8x - 1, through (4,10)
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Perpendicular lines have slopes that are negative reciprocals.
m%5B1%5D%2Am%5B2%5D=-1
8%2Am%5B2%5D=-1
m%5B2%5D=-1%2F8
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y=mx%2Bb
y=-%281%2F8%29x%2Bb
Use the point (4,10) to solve for b.
10=-%281%2F8%29%284%29%2Bb
b=20%2F2%2B1%2F2
b=21%2F2
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