Question

Which parabola opens upward?

y = 2x – 4x^2 – 5

y = 4 – 2x^2 –5x

y = 2 + 4x – 5x^2

y = –5x + 4x^2 + 2

Answer 1

D) y = –5x + 4x^2 + 2

Explanation:

You can tell by the first number being positive or negative. To check use Desmo graphing calculator and enter your equation for next time.