# Definition:Slope/Straight Line

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## Definition

Let $L$ be a straight line.

The **slope** of $L$ is defined as the change in $y$ divided by the change in $x$.

## Sources

- 1998: David Nelson:
*The Penguin Dictionary of Mathematics*(2nd ed.) ... (previous) ... (next): Entry:**slope**:**1.** - 2008: David Nelson:
*The Penguin Dictionary of Mathematics*(4th ed.) ... (previous) ... (next): Entry:**slope**:**1.**