Learning Task 2. Which of the following represents a quadratic function?
1.) f(x) = 8x + 5

2.) f(x) = x2 - 2x + 7

3.)
X -5 -4 -3 -2. -1
y= f(x). 3 0 -1. 0 3

4.)
X. 1 2. 3 4 5
y=f(x). 0. 1. 2. 3. 4​