An
5. A train travelled 720 km in 9 h. How far
would it travel in 11 h?

The train would travel 880 km in 11 hours.

Step-by-step explanation:

880 km

Step-by-step explanation:

To get from 9 to 11, we multiply 9 by 11/9, so the same must be done to 720 km to get the amount in 11 hours. 720 * 11/9 is equal to 880, so the train travels 880 km in 11 hours.

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.