EXPLANATION :
From the problem, 10 cups of basil are needed to make 5 jars of pesto.
So we can say that 2 cups are needed to make 1 jar of pesto.
The ratio is 2 : 1
From the options, option B satisfies with this condition.
2 cups is to 1 Jar
4 cups is to 2 Jars
10 cups is to 5 Jars
a. The answer is B.
b. To graph, plot the points from option B with (basil, pesto)
(2, 1)
(4, 2)
and (10, 5)
The graph will be :
c. To make 4 jars of pesto, we need to locate y = 4 for pesto then match it with the x-coordinate which is the number of cups of basil.
The new point is (8, 4), so to make 4 jars of pesto, you will need 8 cups of basil.