Which graph represents the function?

x^2 - x - 2

Let's find the zeroes (where the function crosses the x axis)

Factor as

(x - 2) ( x + 1)  = 0

Set each factor to 0  and solve for x

x - 2 = 0                             x + 1 =  0

 x = 2                                    x = -1

Notice that the graph on the bottom left appears to be correct  !!!!

the left corner one should be the answer because...

f(x)=x^2-x-2

f(0) = 0^2-0-2 which is -2      plug numbers in

the bottom left is the only one with points (0,-2)

(CPhill's  is much more mathematical lol)