[tex]\begin{gathered} \text{Given} \\ 375-55x=y \end{gathered}[/tex]
Part A:
When Yolanda began driving, the number of hours she has been driving is 0. Thus, we substitute x = 0 to the given equation and we get
[tex]\begin{gathered} 375-55x=y \\ 375-55(0)=y \\ 375-0=y \\ 375=y \\ y=375 \end{gathered}[/tex]
Therefore, Yolanda's distance from Miami when she began her drive is 375 miles.
Part B:
In the equation, x represents the number of hours she has been driving, and this is multiplied by -55, this implies that for each hour she drives it changes by -55 miles.
