Question

which of the following are quadratic functions?

check all that apply

1. y=2x^2-3x+7

2. y=3x-4

3. y=(5x-3x^2)/4+1

4. y=x-x^3

Answer 1

a polynomial of degree 2 is a quadratic.

Answer 2

so the answer is 1 and 3?

Answer 3

correct.