Question

1. Which kind of function best models the set of data points (–1, 22), (0, 6), (1, –10), (2, –26), and (3, –42)?
linear
quadratic
exponential
none of the above

Answer 1

You could graph the data points and see, or just visualize them in your head . . . it looks like the function peaks at one point and then has a negative slope everywhere else. This is how the graphs of these three types of functions generally look:

I know my drawing skills are amazing :D