# How do you identity if the equation #7x^2-28x+4y^2+8y=-4# is a parabola, circle, ellipse, or hyperbola and how do you graph it?

##### 1 Answer

Dec 28, 2016

It's an ellipse with

#### Explanation:

It is probably an ellipse because the coefficients of

So complete the square for the

Then reduce to standard form:

which is of the standard form:

so you can read off the semi-axes