Posted by Joy on Thursday, May 22, 2008 at 11:49pm.
How do you find an equation if you only a have a graph. Like, its already graphed??

PreAlgebra  Ashita, Saturday, May 24, 2008 at 5:37am
If it is a graph of a line then check the point on the y axis where it cuts call it c(include the negative sign if cutting negative y axis)
Locate any to points on the line and find the gradient(m)
so the equation is y = mx + c