Thread: equation of the line that passes through the point

which one of the following is the equation of the line that passes through the point (-5,7) and is parallel to the y-axis?

1. y = -5
2. y = 7
3. x = -5
4. x = 7
5. y = 5/7

Originally Posted by Alexander

which one of the following is the equation of the line that passes through the point (-5,7) and is parallel to the y-axis?

1. y = -5
2. y = 7
3. x = -5
4. x = 7
5. y = 5/7

Any line which is parallel to y-axis must have the equation for some number .

Since it must pass through we see that (the x-coordinate).