Okay, I have two points on my graph - (-2,72) and (0,64). Here is the question on my assignment - "Find another two points on your curve which have the same gradient as those in Parts 3 and 4 and find the equations of the tangents to the curve at these points." The problem I have is I don't know any methods that will find a point with the same gradient. I can do the rest of the question, but I can't find the points as my teacher never showed me how to. I could find it by trial and error - By picking a number on the x-axis and do some number crunching. But that would take ages and my draft is due like tomorrow! I got those first two points by using this method - 1.) Sub value of "x" into equation y=x blah blah blah....... (which would give me the y value) 2.) Sub value of "x" into the derivative to get the gradient 3.) Put all the variables into the equation y=mx+c to show the equation of the tangent at x=blah blah blah If anyone could help, it would be much appreciated as my assignment is due tomorrow.