CCSS.8.F.4 Practice Test

A taxi charges a flat fee of 3 dollars plus 2 dollars per mile. The cost in dollars after driving $x$ miles can be modeled by $C = 2x + 3$. What does the $y$-intercept represent in this situation?

An online streaming service charges a monthly fee plus a fixed cost per movie. The table shows $(m, M)$ where $m$ is the number of movies and $M$ is the monthly cost in dollars: $(0, 7)$, $(1, 10)$, $(3, 16)$. What does the slope of the linear model represent?