Question

Which of the following is a quadratic function?

A)f(x)=2-7x^2
B)f(x)=4^x
C)f(x)=0x^2+7x-4
D)f(x)=3x+8

Answer 1

The curve will touch the x-axis at x = 2, but not pass through it.

Explanation:

I got it right on my test.

Answer 2

A.

Explanation:

A quadratic equation is raised to a degree of 2. Because there is an
`x^(2)` term, it is considered a quadratic equation.