Answer:
see below
Explanation:
The slope is y/x since the relationship is proportional
(5,4)
4/5 = m
The equation of the line is y = mx
y = 4/5x where x is the potatoes and y is the price
We want the cost of one pound of potatoes
x=1
y = 4/5 (1)
y =.80
The cost of one pound of potatoes is .80 dollars
(10,8)
x=10 and y = 8
The cost of 10 pounds of potatoes is 8.00 dollars