Answer:

Step-by-step explanation:
The standard form for the equation of the line is

Recall that:

Therefore the equation of the line is:

If you were to plot the function y=-x+6, both functions meet at the point (4,2)
7 hours is 28 quarter hours. 50 is closer to 45 than 00 so it is. 75 hours. total is 28.75