If 2 = 4 and y + 0 where a # 1, what is y in terms of a? y a - 1 A) y = 2a – 2 B) y= 2a – 4 C) y = 2a - D) y = a + 1 1/21

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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.