12C. The table below shows the total number of birdhouses that can be painted, y, based on the number of cans of paint used, x. Number of Cans of Paint 9. 6. 10 Total Number of Birdhouses 15 18 27 30 What is the constant of proportionality that relates the total number of birdhouses that can be painted, y, to the number of cans of paint, x? O A. 1/3 B. 3 C. 2 D. 6

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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.