SOLUTION: Find the slope of the line containing the given pair of points. If the line is undefined, state so. Please be sure to show all of your work. (-4, -5) and (-4, 5)

Question 423322: Find the slope of the line containing the given pair of points. If the line is undefined, state so. Please be sure to show all of your work.
(-4, -5) and (-4, 5)
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

First let's find the slope of the line through the points

and

Note:

is the first point

. So this means that and .
Also,

is the second point

. So this means that and .

Start with the slope formula.

Plug in , , , and

Subtract from to get

Subtract from to get

Remember, you cannot divide by zero. So this means that the slope is undefined.

Since the slope is undefined, this means that the equation of the line through the points

and

is .

If you need more help, email me at jim_thompson5910@hotmail.com

Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you

Jim
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