Q1(a)-How to draw the graph of the function A=x^2.

Question

Q1(b)-From the graph, How to find the value of A,when
(i)x=2 (ii) x=3 (iii)x=4

Answer 1

http://www.wolframalpha.com/input/?i=plot+y%3Dx%5E2+for+x+%3D+0..4