Name: Jessica Who is asking: Student Level: Secondary
Question: On this problem I have gotten to the point where I have found the Slope of line PA and line RB in y=mx+b form and then I substituted one y in for the other. Now what do I do?? Hi Jessica,
After you substitute as you said above you need to solve for x. This gives the xcoordinate of the point G where the lines PA and RB meet. Substitute this value of x into the equation for the line PA and this will give you the ycoordinate of G. What remains is to show that G lies on the line QC. To do this write the equation of the line QC and substitute the coordinates of G into the equation to verify that G is on the line QC. I hope this helps,Penny
