# Find the Slope of the Perpendicular Line to the Line Through the Two Points (-2,-1) , (0,-4)

,
Slope is equal to the change in over the change in , or rise over run.
The change in is equal to the difference in x-coordinates (also called run), and the change in is equal to the difference in y-coordinates (also called rise).
Substitute in the values of and into the equation to find the slope.
Simplify.
Simplify the numerator.
Multiply by .
Add and .
Simplify the denominator.
Multiply by .
Add and .
Move the negative in front of the fraction.
The slope of a perpendicular line is the negative reciprocal of the slope of the line that passes through the two given points.
Simplify .
Cancel the common factor of and .
Rewrite as .
Move the negative in front of the fraction.
Multiply the numerator by the reciprocal of the denominator.
Multiply by .
Multiply .
Multiply by .
Multiply by .
Find the Slope of the Perpendicular Line to the Line Through the Two Points (-2,-1) , (0,-4)

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