Seudónimo Seudónimo 01-12-2016 Mathematics contestada Which system of equations is represented by the graph ? a) y= 7x +1 & y= -x + 1 b)2x + 3 & y= -3x c) y= x + 13 & y= -3x or d) y=2x+3 & y= - 3x + 13