The phone company charges a flat rate of Php1, 900 per month. In addition, they charge Php2.50 for each minute of service. a. Write a linear equation for the monthly charge based upon the number of minutes of service each month. b. Interpret the slope. c. Interpret the y-intercept.

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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.