m = (y2 - y1)/(x2 - x1) m = (25-10)/(5-2) m = 15/3 m = 5
The slope of 5 means the graph tells us "she is walking 5 feet per second".
So the first part of her walk is at 4 feet per second, then the second part of her walk is at 5 feet per second. The second part of her walk is faster. As a story scenario, perhaps she realizes she is going to be late getting home which is why she is walking a bit faster now.
