How do I draw a VERTICAL line on a graph?

Question

i.e: a horizontal line has the formula of y= whatever number the line crosses when x=0, for example y= 3.

What is the formula for a vertical line? (when y = 0).. when it moves along the x axis..
please give me the answer as y=__________
THANK YOU SOO MUCH : D

I see your answers, but if i cant have y=__________, how do i plot the formula on autograph (program)? cos for autograph the formula has to be y=__

Answer 1

If you are trying to make a vertical line on a Texas Inst. graphing calculator, you can't (as far as I know). I love to monkey around with my TI 84 plus SE, and at one point I wondered the same thing, "how I could graph a vertical line."

The closest I got was able to graph y=(x-3)/0.000000000000001 for the graph of x=3. It appears as a vertical line on your calc, but in reality it's not.

Just a thought, I know my TI 84 plus SE doesn't do it, but I don't know if a more advanced calc might. If you could graph the line Lim(as y approaches zero) [(x-3)/y]. Just throwin' that out there.

Answer 2

It's not y=anything, it's x=whatever, for example x=3 would draw a vertical line through x=3.

Answer 3

You can't. The formula of a vertical line is x = ___. Y is undefined for all points along this line.

Answer 4

Actually y isn't involved. The formula for a *vertical* line would be x = something, such as x = 3.

Answer 5

a vertical line has an undefined slope, it can not be written as y=anything. It is an x=____ equation
Example x=5 is a vertical line through (5,0) and it never crosses y.

Answer 6

you are able to't make an *precisely* vertical line utilising a "Y=" - type equation. (you are able to, nonetheless, in case you alter the equation type to parametric, case in point.) in case you opt to stay in the "Y=" mode, you are able to only make a line with at VERY great slope--like, y = 10000000x. this could be close sufficient to vertical for many purposes. §

Answer 7

A verticle line is straight up and down. It crosses only the x-axis.