Question

What is the slope of the line x = −5?

Undefined
0
−5
5

Answer 1

It is a vertical line,
Slope=tan 90=undefined

Answer 2

Here is your answer:

Look at it this way:

• 5 - 5 = 0
• Using the slope formula you would see that this line is vertical.
• According to the rules for solving slope when a line is vertical that would mean that it's undefined.

Therefore the answer is the first option "undefined."

Hope this helps!