HELP PLEASE!! Thanks

The Slope will be "Rise over Run" or change in Y over change in X. In this case the slope is 60/1 or just 60. or 60 miles in 1 hour, so the bus is travelling at an average of 60 miles per hour.

Step-by-step explanation:

Just understand what "slope" means, and how to get it, and then make sure you can read a graph, and remember what units are used on the graph. Cheers.

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18