Question

draw the graph of 2x-y= 0 and 2x+y =9 Write down the co-ordinates of the point of intersection of the two lines

Answer 1

graph is drawn on the link:
http://www.wolframalpha.com/input/?i=2x-y%3D0%2C+2x%2By%3D9
the point of intersection is:
(2.25,4.5) = (9/4,9/2)