Kristen's favorite book is about Johnny Appleseed, the American pioneer who planted apple trees all across the country. Inspired by the story, Kristen plants an apple seed in her backyard and tends the seed as it slowly grows into a tree. There is a proportional relationship between the age of Kristen's apple tree (in years), x, and the height of the tree (in feet), y.

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed