Graph the data in the table below. Which kind of function best models the data? Write an equation to model the data.
X Y
0 0
1 -2
2 0
3 6
4 16
1. exponential; y = 2•4x
2. quadratic; y = 2x2 + 4x – 3
3. linear; y = – 2x
4. quadratic; y = 2x2 – 4x