Step-by-step explanation:
{(2, -9), (-5, -1), (-6, -3), (-5,7)}
-5 appears twice ( this is not allowed for the function)
When -2x+y=1 and y=-x+4, x = 1
There are 6 reading groups
24 students ÷ 4 students each group= 6 reading groups
oh shi sorry I wish I could help but I'm stupid