1. The problem statement, all variables and given/known data Given an right angled isosceles triangle with hypoteneuse of 2 units. The hypoteneuse lies on the x-axis and is 2 units long. The points of the triangle are in terms of x and y as follows: C-1,0), A(1,0)and B(0,y). Inscribed in the triangle is a rectangle which has one point on the line AB of the triangle at point P(x, ?) I have to express the y co-ordinate of P in terms of x 2. Relevant equations 3. The attempt at a solution I would like to find the equation of the line AB but I don't have the slope. I only have the one point A(1,0) but I think the isosceles nature of the triangle is the key to this. I don't know how that info though.