well i dont knw about the picure idea...but yes i hav designd a simple project which
uses lables as points which r then ploted on the form graph which has a defined coordinate system....here is the part of code it may help u...but the only problm is u cant make the user enter equation its not tht easy to gt the equation in the code so do enter the required equation in the source code...


Private Sub plotgraph_Click ()...