Question

What is the equation in slope intercept form when the slope is undefined?

Answer 1

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.

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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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I hope that this was helpful.