SOLUTION: How do you work out the gradient of the line perpendicular to the line with the equation y=3x-5? I have tried plotting the line on a graph where y intercepts the line at -5, but c

Algebra ->  Graphs -> SOLUTION: How do you work out the gradient of the line perpendicular to the line with the equation y=3x-5? I have tried plotting the line on a graph where y intercepts the line at -5, but c      Log On


   

Question 1025488: How do you work out the gradient of the line perpendicular to the line with the equation y=3x-5?
I have tried plotting the line on a graph where y intercepts the line at -5, but cannot figure out what to do next?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Perpendicular lines have slopes that are negative reciprocals.
In this case,
m%5Bp%5D%2A3=-1
m%5Bp%5D=-1%2F3
Then use the point slope form,
y-%28-5%29=-%281%2F3%29%28x-0%29
Complete that for the solution.