Question

On equal intervals, the y-values of a quadratic function have a common _________

Answer 1

For reference

Explanation:

Answer 2

second difference

Explanation:

The differences of the y-values will differ by a common amount.

Example:

y = x^2 for x = 2, 4, 6, 8

y-values are 4, 16, 36, 64

differences of these are 12, 20, 28

differences of these differences are 8 and 8, a common value.