The table and graph below show the relationship between the number of months, x, and the total amount of money saved in dollars, y, for two students. Student A Student B 500 3 y 100 200 300 400 300 200 100 0 1 2 3 4 5 Months Total Money Saved (in dollars)

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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.