Decide whether each function whose graph is shown is the graph of a cubic (third degree) or quartic (fourth-degree) function.

1.

(a)

(b)

2.
(a)

(b)

Match each equation with the correct graph among those labeled (a)-(h) by recognizing shapes and features of polynomial and rational functions. Use a graphing utility to confirm your choice.
3. y = x3 - x
4. y = (x - 3)2 (x + 1)
5. y = 16x2 - x4
6. y = x4 - 3x2 - 4

-2 -2 -6 T -2 -4 -4