The equation of the given line above is y=3x-1. The slope of the line is 3/1 (3x) and the y-intercept which is where the line crosses the y-axis is (0,-1) When you plug these parameters into the equation you will get the equation y=3x-1
Volume of Cylinder =

Based on what we're told:
r (radius) =

h (height) =

So:
Volume of cylinder =

=
The answer to the question is D.
3,2 was your first point and it dropped to -5,0.
Y intercept is -6
Y= 5x^2-X-6
Y= 5(0)^2-0-6
Y= 0-0-6
I think B is the only polynomial because A and C both have roots that aren't supposed to be in polynomial expressions and you can't divide (D)