the graph shows then number of possible passengers for a given number of roller coasters cars that leave the platform

oluition
or this case we have the folllowing:
Part a
e select (0,0) and (3,24)
the slope would be:
[tex]m=\frac{y_2-y_1}{x_2-x_1}=\frac{24-0}{3-0}=8[/tex]then the equation for this case would be:
y= 8x +b
Using (0,0) we can find b:
0 ) 8*0 +b
b= 0
Then the equation is:
y= 8x
Part b
or this case we can conclude that for each n8 passengers is required a new car for the rooller coaster