Question

which equation describes a parabola

-2y^2+10x+9y=-11

-4x^2+10x-4y^2-2y+9=0

3y^2+10y-8x^2-4x-2=0

-2x^2+10x-4y^2+9y=2
help?!

Answer 1

-2y^2+10x+9y=-11 (parabola)
-4x^2+10x-4y^2-2y+9=0 (circle)
3y^2+10y-8x^2-4x-2=0 (hyperbola)
-2x^2+10x-4y^2+9y=2 (ellipse)

Answer 2

how is a a parabola ? @ilfy214

Answer 3

http://www.wolframalpha.com/input/?i=-2y%5E2%2B10x%2B9y%3D-11 look at the gaph

Answer 4

These are the correct equations, right?

Answer 5

yes thank you

Answer 6

Your welcome! :)