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Prepdle

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Build a linear function from two factsTactic

Tactic

Build a linear function from two facts

Slope from the change, intercept from one point

10 min 6 stepsGraded practice at the end

Give me any two facts about a line and I can rebuild the whole thing. Old habit from my days casing the corner store.

Meet it
Spot it
Run it
Dodge the traps
Play with it
Prove it

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

Calls on

Slope and average rate of changeTechniqueChange in output over change in input, same order
SubstituteTechniqueSwap in the value, parentheses and all
Convert between linear formsTechniqueRewrite a line to show the feature you need
Read values from a graph or tableTechniqueRead the scale before you read the value
Evaluate and invert a functionTechniqueInput given, substitute; output given, solve
Classify growth as linear or exponentialTechniqueSame difference is linear; same ratio is exponential

Used by

Evaluate, compose, and transformTacticSubstitute the whole input, parentheses and all

Other routes

Graph it (Desmos)TacticTurn the question into a point you can click