#2**+3 **

Note, NSS....the two roots are are x = -1 and x = 1

And when x = 0.....y is negative

Notice that letting x = 0 in the first equation means that y = -2...this means that the point (0, -2) should be on the graph....but this point clearly isn't on the graph

And letting x = 0 in the second and fourth equations, means that y is positive.....and that's not possible on the graph when x = 0

So....the third equation must be correct.....!!!

CPhill Nov 17, 2017