I REALLY need help with this worksheet. it is due tonight and I really don't understand it

Step-by-step explanation:

1) So to answer these questions first plot the "b" value (which in number 1's case would be 3).

2) Go up three spaces on the graph. and that should leave you at the point (0,3) Plot this point.

3) Now go down 3 (-3x) and go over one point to the right(this should put you at point (1,1). Plot this point.

4) Move on to the next equation in number one. Go up three spaces on the graph.

5) Go down one and over one until you find that you have plotted a point in which both equations intercept (this point would be (0,3).

6)Repeat this process for the rest of the problems

b.) 160 miles on a 5 gallons car

step-by-step explanation:

240/10=24 miles/gallon

160/5=32 miles/gallon

30/1=30 miles/gallon

168/6= 28 miles/gallon

32 miles/gallon is the most amount, so this is the best.

c. (3,2,6) is the answer.