On a set of blueprints, a 12-foot wall is represented by a 6-inch line segment. What scale is used in the blueprints?

A. 6 feet : 1 inch
B. 6 feet : 2 inches
C. 2 feet : 2 inches
D. 2 feet : 1 inch

D.

Step-by-step explanation:

We're working with ratios here. To get this answer, let's think of fractions. When you're simplifying, you do the same thing to the top as to the bottom. Same with ratios! To get from 12 to 2, we divide by 6. We do the same to 6. 6 divided by 6 is 1, so D is the right answer.

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.