1/3 because there are 3 people and only one correct answer
The slope of the tangent line to
at
is given by the derivative of
at that point:

Factorize the numerator:

We have
approaching -1; in particular, this means
, so that

Then

and the tangent line's equation is

Answer:
6 x 3 = 18 + 2 = 20/3
3/4 X 3/20 =
3 X 3
-------- = 9/80 already simplified to lowest
4 X 20
The graph has to be a straight line that pass through the origin (0,0)