Linear Functions, Equations, and Inequalities>Writing Systems of Two Linear Equations from Tables, Graphs, and Descriptions(TEKS.A.9-12.2.I) Practice Test

Two phone companies offer monthly plans. Company A charges a flat fee of 40 dollars plus 0.05 dollars per minute. Company B charges a flat fee of 25 dollars plus 0.08 dollars per minute. Let $x$ be the number of minutes and let $y$ be the total monthly cost in dollars.

On a coordinate grid, Line R passes through points (0, 6) and (3, 0). Line S passes through points (0, -2) and (3, 7).