Answer:
5 Graph. Place a for on the -2 on the Y axis. next count up 1 and right 1 and place a dot. Do the opposite going down and left. do this for however long you need.
6.
Y= -3x + 2
also not sure ;-;
7.
I think 2 and 4 but I'm not sure on this one ;-;
8.
Y = 16z (I believe)
8 days
9.
a. 2
b. 15 gallons
c. 7.5 hours
I tried my best. Hopefully this helps you :)