Question

What is the constant of variation for the quadratic variation

x 2 3 4 5 6
y 32 72 128 200 288?

A. 8
B. 16
C. 24
D. 4

Answer 1

Let a be the constant the quadratic term
y = ax²
32 = a(2)²
a = 8
Using the same method for each pair of x and y, we can confirm that the value of a is 8.
The answer is A.