3: Vanessa travels to school from her house every morning. It's a straight line down a long
backwoods road. When she has been travelling for 4 minutes, she is 10 miles from the school.
When she has been travelling for 10 minutes, she is 1 mile from the school.

a) Find a linear function that models Vanessa's distance from school after x minutes.

b) What does the slope of the function represent in this problem?

c) What is the y-intercept for this model, and what does it mean?