y=3x+1 y=-2x+3 Make these equal each other: 3x+1=-2x+3 Add 2x to both sides: 3x+2x+1=-2x+2x+3 = 5x+1=3 Subtract 1 from both sides; 5x+1-1=3-1 = 5x=2 Divide 5 from both sides: 5x/5=2/5 X= 2/5 Plug X into one of the equations: y=3(2/5) +1 y=11/5(2.2)
13 because there pretend there is 24 people then it would be 12 but then there is one left over so 13 because somebody would have to shake hands with that person
