Question

Choose the equation of the vertical line passing through the point (1, -1).

x = 1
y = 1
x = -1
y = -1

Answer 1

the equation of vertical line is just x= c
where c is the x co-ordinate of the point, so whats c here ?

Answer 2

1?

Answer 3

yes! so the equation is x=1 :)

Answer 4

so its always just the x coordinate?

Answer 5

the vertical line has equation x=c because every point on the vertical line is 'c' distance away from y axis,


incase of vertical line its x co-ordinate

incase of horizontal line its y co-ordinate