The blue dot is at what value on the number line?

4

Step-by-step explanation:

We can start by seeing the difference between -4 and -8. They have a difference of 4, so the middle number is 2 because 4/2 = 2. So now we can start skip counting, there are 4 lines between -4 and the blue dot. So 4*2 = 8. -4+8=4. So our answer is 4.

x=30

step-by-step explanation:

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.