HS.F-LE.A.1  Distinguish between situations that can be modeled with linear functions and with exponential functions: 

HS.F-LE.A.1.a  Prove that linear functions grow by equal differences over equal intervals, and that exponential functions grow by equal factors over equal intervals.

HS.F-LE.A.1.b  Recognize situations in which one quantity changes at a constant rate per unit interval relative to another.

HS.F-LE.A.1.c  Recognize situations in which a quantity grows or decays by a constant percent rate per unit interval relative to another.