Pre-Algebra Examples

,
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.
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Simplify the numerator.
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Multiply by to get .
Subtract from to get .
Simplify the denominator.
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Remove parentheses.
Multiply by to get .
Add and to get .
Move the negative in front of the fraction.
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