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Zero, one, or infinitely many solutionsTactic

Tactic

Zero, one, or infinitely many solutions

Compare slopes and intercepts instead of solving

10 min 6 stepsGraded practice at the end

Two lines can meet once, never, or everywhere. The hall monitor and I managed all three in one semester.

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

Distribute and expandTechniqueMultiply every term by every term, signs included
Combine like termsTechniqueAdd coefficients only when the variable parts match
Convert between linear formsTechniqueRewrite a line to show the feature you need
Match coefficientsTechniqueTurn one identity into one equation per power

Other routes

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