Algebra › Section C · Graphs and functions › Topic C.2
Slope of a line
Some lines climb gently, some shoot up steeply, some lie flat. Slope is the one number that measures all of that — and outside mathematics it becomes speed, hourly rates and growth, which is why it deserves a topic of its own.
In this topic
- Steepness needs a number
- Rise over run
- Reading slope from a graph
- Sign and steepness
- Horizontal and vertical lines
- Worked example: slope from two points
- Slope as a rate of change
- Slope-intercept form
- Graphing from slope and intercept
- Worked example: a gym membership
- Common mistakes to avoid
- Key takeaways
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