How do you find the slope of the line x=1?

2 Answers
Apr 1, 2015

Slope is undefined that is oo
Reason:
The line x = 1 is an ordinate and all ordinates are parallel to the y-axis.

Another way of thinking of this is that it has an infinitely large slope.

Apr 1, 2015

The definition of slope requires 2 points on a non-vertical line. Alternatively, it requires two points (x_1, y_1) and (x_2, y_2) with x_1 != x_2.

The slope of the line x=1 does not exist. Because there are no tow points with different x values on the line.
It is not defined.
This case is not includes in the definition of slope.

(There is also no-slope intercept form, because there isn't a slope to use for m.)