SOLUTION: perpendicular to y=9x+8, passing through the point(0,-7)

Algebra ->  Equations -> SOLUTION: perpendicular to y=9x+8, passing through the point(0,-7)      Log On


   

Question 344765: perpendicular to y=9x+8, passing through the point(0,-7)
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
9%2Am%5B2%5D=-1
m%5B2%5D=-1%2F9
.
.
.
y=-%281%2F9%29x%2Bb
Use the point (0,-7) to solve for b
-7=-%281%2F9%29%280%29%2Bb
b=-7
.
.
.
highlight_green%28y=-%281%2F9%29x-7%29
.
.
.