Question

Determine whether the parabola y = −x2 + 15x + 8 opens up, down, left, or right. please help D;

Answer 1

When a parabola is negative it opens down like a frown. But if it is positive it will open up ward like a smile. Do you know how to tell if your equation is negative or positive?

Answer 2

soo its negative? @ebonynija

Answer 3

Lol yeah. It is. So in your case your parabola will open down. I'm not sure what it means by left or right though.

Answer 4

Thanks! c:

Answer 5

no prob ^.^