No.154 Graphing Linear Equations

POINT

Rewrite an equation in the form \(y=ax+b\) when possible. \(y=k\) is horizontal and \(x=k\) is vertical.

Example

Draw \(-3x+y-2=0\).

\(y=3x+2\)

Draw \(2x-3y=6\).

\(y=\frac23x-2\)

Draw \(y=-3\).

A horizontal line through \(y=-3\).

Draw \(2x-8=0\).

\(x=4\), a vertical line.

VIDEO · Coming later

TRY 1

Draw \(x+y=4\).

\(y=-x+4\)

TRY 2

Draw \(3x+2y=6\).

\(y=-\frac32x+3\)

TRY 3

Draw \(y=2\).

Horizontal line \(y=2\).

TRY 4

Draw \(3x+6=0\).

Vertical line \(x=-2\).