I am trying to graph on the computer the equation x=y and y=2sqrtx. Could someone please explain how I do this

Answer 1

There are tons of online graphing programs out there, and it doesn't matter a bit whether you use Windows of Macintosh (or even old-fashioned DOS). One good grapher is EZGraph at http://id.mind.net/~zona/ezGraph/ezGraph.html .

To graph on almost any graphics utility, you need to have your equation in function form (that is, solved to say "y = ...") Also, you invariably use * to means "times" and put the argument of special functions in parentheses. On EZGraph, your functions would be:
y = x
y = 2*SQRT(x)

y = x will give you a diagonal line through the origin. The other function starts at (0,0), goes up steeply to (1,1) (where it intersects the first function), and continues to rise slowly.

Answer 2

if you have an apple computer open the program Grapher from you applications and it can graph anything basically, if you have a pc, good luck!

Answer 3

http://www.math.hawaii.edu/lab/241/online-grapher.shtml