Question

What is the equation of the line that passes through the point (-7,-4) and has an undefined slope?

Answer 1

(-7, anything but 4)

Explanation:

Since then you would have something like this

-4+5=1

-7+7=0

Answer 2

When the slope is UNDEFINED, that means the denominator of the slope formula is ZERO .

Slope formula = (y2 - y1)/(x2 - x1), and the graph is a VERTICAL line and the equation of the line is x =7 . Point (7, -4) is a point on the line.

Hope this helps...