SOLUTION: slope intercept for line perpendicular to y=-3x-1 (1,-1)

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Question 753457: slope intercept for line perpendicular to y=-3x-1 (1,-1)
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
The best interpretation of what you want is the line perpendicular to y=-3x-1 and contains the point (1,-1).

The slope of the line you want is +%281%2F3%29. We initially do not know the y-intercept, b but can solve for b and then substitute the given point of (1,-1).


y=%281%2F3%29x%2Bb
b=y-%281%2F3%29x
Now let x=1 and y=-1
b=-1-%281%2F3%29%2A1
b=-1%261%2F3

Your equation is then found, highlight%28y=%281%2F3%29x-1%261%2F3%29