What is the equation in slope intercept form when the slope is undefined? | Socratic (2024)
If the slope of a line is undefined, then the line is a vertical line, so it cannot be written in slope-intercept form, but it can be written in the form: #x=a#, where #a# is a constant.
Example
If the line has an undefined slope and passes through the point #(2,3)#, then the equation of the line is #x=2#.
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