2x+3y−8=0\mathrm{2x+3y-8=0}2x+3y−8=0
3x−2y+1=0\mathrm{3x-2y+1=0}3x−2y+1=0
3x+2y−7=0\mathrm{3x+2y-7=0}3x+2y−7=0
2x−3y+4=0\mathrm{2x-3y+4=0}2x−3y+4=0