18. A “20 scale" refers to which of the following? 29 A. 1/4" = 1'-0" %3D B. 1/2" = 1'-0" C. 1" = 10' %3D D. 1" = 20' %3D

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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.