Cab companies often charge a flat fee for picking someone up and then charg an additional fee per mile driven.

The city of Charlotte, NC charges $2.50 fee and $2.50 per mile for each cab ridE
4What does the y-intercept mean (in words) in the context of this problem? Hint: What do you pay when you step into the cab

The y-intercept in this context would represent the flat fee or the initial charge that is incurred when you step into the cab. In other words, it is the amount you have to pay regardless of the distance you travel.