Question

How do you write `x = 4` in slope-intercept form?

Answer 1

`x = 4` represents a vertical line. By definition a vertical line has an undefined slope. Therefore, this cannot be put into slope-intercept form.

Explanation:

From: https://www.algebra.com/algebra/college/linear/Linear_Algebra.faq.question.28027.html

"It has no slope-intercept form because the slope of a vertical line is not defined"