# How do you write the equation of the line with (-5, -9) and is perpendicular to x=-9?

Apr 28, 2017

The equation of the line is $y = - 9$

#### Explanation:

The slope of line perpendicular to $x = - 9$ is $m = 0$

The equation of line passing through $\left(- 5 , - 9\right)$ is y - (-9) = m (x- (-5)
or $y + 9 = 0 \cdot \left(x + 5\right) \mathmr{and} y + 9 = 0 \mathmr{and} y = - 9$

The equation of the line is $y = - 9$ [Ans]