quadratic means 2nd degree
I'm thinking
y=ax²
when x=2, y=2
when x=4, y=8
so
2=a2² and
8=a4² or
2=4a and
8=16a
easy
divide first equation by 4 and 2nd by 16 to get
1/2=a
then
\(y= \frac{1}{2}x^2\)
A. I would say 1/2 is constant
B. is\(y= \frac{1}{2}x^2\)
