Find an equation of the line described below. Write the equation in slope-intercept form (solved for y), when possible.

Question

With undefined slope, through [2/5,2]

What is the equation of the line?

Answer 1

Since the slope of the line is undefined, it is a vertical line. So, the equation of the line can be expressed as x = 2/5, since the x-coordinate will always be equal to 2/5 regardless of the value of y.