(a) y 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 0,0) From the graph: OX = (64 ) p (8,12) 4: 4 = 1 : 1 6 : 6 = 1 : 1- X 6 12 4 1 2 3 4 5 6 7 8 9 10 x 283 O X = ( 64 )