The horizontal line is y = -1
The vertical line is x = 4
Here, we want to write equation for the horizontal and vertical lines passing through the point
The horizontal line has the equation of the form y = k
while the vertical line has the equation of the form x = k
where x and y represents the points on the x and y axes respectively
For the horizontal line, the equation is y = -1
For the vertical line, the equation is x = 4