A.
B.
C.
Match the graphs above with the functions below. (Enter A, B, and C, as appropriate.) Clicking on the above graphs will show you a larger version of the same graph.
$y=x^3-x$ ,
$y^2=x+11$ , and
$y=x^4-4x^2$ .
Hint: Even if you don't recognize the graphs directly, you can use symmetry to distinguish between them.