Precalculus Examples

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Step 1
Slope is equal to the change in over the change in , or rise over run.
Step 2
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).
Step 3
Substitute in the values of and into the equation to find the slope.
Step 4
Simplify.
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Step 4.1
Simplify the numerator.
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Step 4.1.1
Multiply by .
Step 4.1.2
Add and .
Step 4.2
Simplify the denominator.
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Step 4.2.1
Multiply by .
Step 4.2.2
Subtract from .
Step 4.3
Move the negative in front of the fraction.
Step 5
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