Question

Which of the following is a quadratic inequality? y < 2x + 7 y < x3 + x2 y < x2 - 5x

Answer 1

I believe the answer is "c"

"y < x^2 - 5x"

Hope this helps!

Answer 2

The correct option is 3.

Explanation:

The highest degree of quadratic inequality is 2.

In option 1,

`y<2x+7`

The highest degree is 1, therefore in is a linear inequality.

In option 2,

`y<x^3+x^2`

The highest degree is 3, therefore in is a cubic inequality.

In option 3,

`y<x^2-5x`

The highest degree is 2, therefore in is a quadratic inequality.

Therefore option 3 is correct.