# How do you identify the following equation x + y = 5 as that of a line, a circle, an ellipse, a parabola, or a hyperbola.?

Nov 11, 2015

A line

#### Explanation:

The general formula for a linear function is:

$A x + B y + C = 0$

For this problem, $A = B = 1$ and $C = - 5$

hope that helped