SOLUTION: Find the slope of any line perpendicular to the line through points (0,5) and (-3, -4)

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Question 105886: Find the slope of any line perpendicular to the line through points (0,5) and (-3, -4)
Answer by ankor@dixie-net.com(12701) About Me  (Show Source):
You can put this solution on YOUR website!
Find the slope of any line perpendicular to the line through points (0,5) and (-3, -4)
First find the slope of the line thru the given points:
Use the slope formula: m = %28%28y2+-+y1%29%29%2F%28%28x2+-+x1%29%29
:
In your problem: x1 = 0, y1 = 5; x2 = -3, y2 = -4
So you have:
m = %28%28-4+-+5%29%29%2F%28%28-3+-+0%29%29 = %28-9%29%2F%28-3%29 = +3 is the slope (m1)
:
The relationship of slopes of perpendicular lines can be given as:
m1 * m2 = -1
:
3 * m2 = -1
:
m2 = -1%2F3 is the slope of the perpendicular line
:
Could you follow this OK? Any questions?