ul li p7312019 y=ax+b 1 2010-2011p p12p p1p p:p p1 y=2xy=3x+2p pp p 31p p82 42p p y=3x+2p p2 -1 4p p3 -3p p2 y=x+1p p13p pp py=2x+1p pp p y=2x+1p pp li li p7312019 y=ax+b 1 2010-2011p p22p p1p li ul