M+k because the subtraction sign and negative cancel out to become positive
Angle 15 and Angle 9 make a straight line
Answer:
Step-by-step explanation:
Hello.
There are really 2 ways to think about the given problem.
First, we can use the slope formula:


Slope = undefined
The second way is to just take a look at the points.
You should notice that the x-coordinates are the same.'
If the x-coordinates are the same, then the slope is

I hope it helps.
Have a nice day.
