I would like to verify my answer please:(adsbygoogle = window.adsbygoogle || []).push({});

x^2-2xy+y^2+5x+5y=0

using the formulas b^2-4ac=0 (indicates a parabola)

b^2-4ac<0 (indicates an ellipse)

b^2-4ac>0 (indicates a hyperbola)

2^2-4(1)(1)=0

4-4=0 therefore this graph must be a parabola!

Am I correct?

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Verification of a parabola

**Physics Forums | Science Articles, Homework Help, Discussion**