How do you find the slope of #(4, 6), (4, 8) #?

1 Answer
Alan P.
Feb 19, 2017

The line through #(4,6)# and #(4,8)# has an "undefined" slope.

Explanation:

This is a vertical line; there is no change in the #x# coordinate value;
and since the slope is defined to be #("change in "y)/("corresponding change in "x)# any attempt to evaluate the slope would result in an attempt ot divide by zero.

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