7. The diagram shows the graphs of y = x2 – x, y = x + 2, y = 8 and y = -2x + 4.

Use the graphs to find the solutions to:

(a) x2 – x = 0

(b) x2 – x = x + 2

(c) x2 – x = 8

(d) x2 – x = -2x + 4

(e) x2 – x – 8 = 0

(f) x2 + x = 4

Im not sure how to read off this kind of graph. Help please. How exactly do I find soloutions from this graph? Please be detailed as I need to answer all these questions.