# Common Core MATH 8 F 3 Grade 8 Functions Define Evaluate And Compare Functions

Back**Functions: Define, Evaluate, And Compare Functions.**

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.

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