When you order merchandise from a website you pay shipping cost C, in dollars. The shipping costs depend on the weight W, in pounds, of the merchandise. The relationship is C = 1.81W + 5.48 Identify the slope, and explain in practical terms its meaning.

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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.