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Slope and average rate of changeTechnique

Technique

Slope and average rate of change

Change in output over change in input, same order

3 min 3 steps

Slope questions catch people on the order of subtraction. I used to get caught out of order too, mostly cutting the line at the water fountain.

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The first step is free. A free account opens the rest.

Calls on

Slope and y-interceptFactRead steepness and starting value straight off a line

Used by

Build a linear function from two factsTacticSlope from the change, intercept from one point
Scatterplots and best-fit modelsTacticPredictions and slopes come from the line, not the dots
Circle equations, points, and tangentsTacticGet to standard form, then read center and radius