Is this right ? ‍♀️ because i'm always getting stuck on graphing the y intercept and the slope on a graph .

The equation is positive, so the graph should be on the other side. One way to check this would be to plug a number in the equation,
where x = -2
y= 3/2(-2)-1
y= -3-1
y= -4
on the graph you plotted you have y = 2 where x = -2

The correct awnser is 29.76 pounds.

If there are four friends then each would get, 1.25 or 1 1/4. so this is how i solved 5 ÷ 4 = 1.25 . hope this ; )