# Thread: Equation of the line

1. ## Equation of the line

Here are a few problems that are giving me trouble when trying to figure out the equation of a line. I can't seem to figure out the rules that apply so if you could tip me off, I would greatly appreciate it.

1. The slope is undefined and the line passes through (1,4)
2. The equation of the y-axis
3. The equation of the x-axis

I have to put all answers into the point-slope formula y-y1=m(x-x1)

Thank you for your help!! It is greatly appreciated!!

2. Originally Posted by acharles
Here are a few problems that are giving me trouble when trying to figure out the equation of a line. I can't seem to figure out the rules that apply so if you could tip me off, I would greatly appreciate it.

1. The slope is undefined and the line passes through (1,4)
2. The equation of the y-axis
3. The equation of the x-axis

I have to put all answers into the point-slope formula y-y1=m(x-x1)

Thank you for your help!! It is greatly appreciated!!
When a line slope is undefined you don't have a slope, it a vertical line.

1. y = 4
2. x = 0
3. y = 0