Figure 3	Figure 4

 

4.

 The diagram shows the curve of and the line . The curve

 and the line intersects at points A and B. The curve cuts the y-axis at E.

(a) Find the values of a and b,  (b) Write down the coordinates of E,  (c) Write down the equation of line of symmetry,  (d) Write down, but do not simplify, an equation in x    which has the x-coordinates of A and B as its    solutions.  (e) Find the coordinates of points A and B,