SOLUTION: How do i find the slope for the lines (6, 2)(-6, -4)?

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Question 318863: How do i find the slope for the lines (6, 2)(-6, -4)?
Answer by excoastie725(4) About Me  (Show Source):
You can put this solution on YOUR website!
You can not find the slope of those points because the x-values are all the same giving a vertical line. The answer to that problem would be undefined. Now if the y-values were all the same and the x-values changed then you would have a slope of 1.