Equation of the line when the slope is undefined

- Find the equation of a line when the slope is undefined
- What is the equation of the line if the slope is undefined
- Equation of a line whose slope is undefined
- The equation of the line is x =- 4 and the slope is undefined
- How do you find the equation of a line when the slope is undefined
- Equation of the line in slope-intercept form
- Slope and equation of the line
- Equation in slope intercept form
- Slope and equation of the tangent line