A slope is a surface of which one end or side is at a higher level than another both a rising or falling surface.
And to find the rise over run use the slope to find a second point on the line. You will start with the y-intercept and rise up or down and then run left or right depending on the sign of the slope.
This question is asking you to find the circumference of the circle. To do this the equation is C=D where C is circumference and D is diameter. So, C= 3.14* 2.5 which equals 7.85 ft.
