How do you write an equation of a line given slope is undefined and the coordinates are (-12,0)?

Aug 4, 2016

Then the graph is $x = - 12$

Explanation:

If the slope is undefined then it means that

Slope (gradient) $\to \frac{\text{change in y-axis")/("change in x-axis") ->("change in y-axis}}{0}$

So there is no change in the x-axis implying that the graph is a line parallel to the y-axis.

As this line passes through the point ${P}_{1} \to \left(x , y\right) = \left(- 12 , 0\right)$

Then the graph is $x = - 12$