Question

Write the equation of the line that passes through the points (4,-1) and (4,8). Put

your answer in fully reduced point-slope form, unless it is a vertical or horizontal line.

Answer 1

x = 4

Explanation:

Given the points (4, - 1) and (4, 8)

Note the x- coordinates are 4 in both cases.

This indicates the line passing through the points is vertical with equation

x = c

where c is the value of the x- coordinates the line passes through. In this case 4, thus

x = 4 ← equation of vertical line