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?
It's an ellipse with
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