8.F.A.3
Interpret the equation y = mx + b as defining a linear function, whose graph is a straight line; give examples of functions that are not linear. For example, the function A = s² giving the area of a square as a function of its side length is not linear because its graph contains the points (1,1), (2,4) and (3,9), which are not on a straight line.
Where this sits in the school year
Our Grade 8 Math scope and sequence teaches 8.F.A.3 in Unit 5: Functions, weeks 13–16.
Define functions, compare them across representations, and model real situations with rate of change and initial value. See the full pacing guide →
Builds on
Suggested prerequisites. This sequencing is our editorial guidance, not part of the Common Core.
Teaching Kits for this standard
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