1. The following function models the approximate size of a monthly payment for a $200,000 home mortgage at 7.5% interest rate. The R represents the size of the monthly payment and t represents the term of the loan in years. (Adapted from Calculus, Larson and Edwards.) 1250el3.375 R = e13.375 -1

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.