Jack is running on a treadmill at a speed of 7.2 miles per hour. Assume y=total distance and x=number of hours.

Which equation represents the function on the graph?

What is the result of adding the system of equations? 2x+y=4 3x-y=6

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how