$\"\"$

The line equation of point-slope form is $\"\"$ , where m is the slope and $\"\"$ is a given point on a nonvertical line.

Slope of a horizontal line is zero. $\"\"$

Now substitute $\"\"$ and $\"\"$ in point-slope form equation.

$\"\"$

Subtract 5 from each side.

$\"\"$

The line equation in point- slope form is $\"\"$ .