SOLUTION: What is the equation of the line that contains (7, -9) and (7, 3)?

Question 199370: What is the equation of the line that contains (7, -9) and (7, 3)?
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

and

is the second point

.

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 (which is a vertical line).

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