Question

Hello! please help me understand this subject a little better.

Answer 1

`\begin{gathered} \text{Given} \\ 375-55x=y \end{gathered}`

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

`\begin{gathered} 375-55x=y \\ 375-55(0)=y \\ 375-0=y \\ 375=y \\ y=375 \end{gathered}`

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.