SOLUTION: How do I find the slope of the line passing through points (3,4) and (3,-4)? My solution is 0..am I right?

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Question 80519: How do I find the slope of the line passing through points (3,4) and (3,-4)? My solution is 0..am I right?
Answer by Earlsdon(6294)   (Show Source): You can put this solution on YOUR website!
Find the slope of the line passing through the two points: (3, 4) and (3, -4).
The slope, m is given by:

In this problem:




Making the appropriate substitutions, we get:

Undefined!
The slope is undefined, not 0!
A line with an undefined slope (m = x/0) is a vertical line, which is what you have here.
A line with a zero slope (m = 0) is a horizontal line.

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