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

The city of Raleigh, NC charges $1.95 fee and $2.70 per mile for each cab ride

10What does the slope mean (in words) in the context of the problem?

In this context, the slope of $2.70 per mile represents the additional fee charged by the cab company for each mile driven. It indicates that for each mile traveled, an extra $2.70 is added to the flat fee of $1.95.