# Equations and Graphs of Linear Relations

*label*Mathematics

*timer*Asked: Apr 17th, 2015

**Question description**

Eliana claims she has discovered a method for determining the general form equation of a line that is perpendicular to a given line. Eliana’s method is described below.

The
line *Ax *+ *By *+ *C *= 0 will always be perpendicular to the
line *Bx *- *Ay *+ *C *= 0.

Is Eliana’s method reasonable? Explain why or why not?