Brian sat in a massage chair at a shopping mall for 8 minutes and paid $9. Norah sat in the same massage chair for 12 minutes and paid $11. If the relationship between the number of minutes and the amount paid is linear, with x representing the minutes and y representing the amount paid in dollars, which of these equations models the situation? A x = 0.5y + 5 B x = y +1 y = 0.5x + 5 O D y = x +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.