Suppose y varies directly as x. if y=-7 when x=-14, find x when y=10

20

Step-by-step explanation:

From if y=-7 when x=-14 >  x=2y

that means when y=10, x=20

X = 20

Step-by-step explanation:

Y = KX (where K is the proportionality constant as y varies directly with X)

-7 = -14 K

K = -7/-14

K = 0.5

Hence finding X when Y is 10

Y = 0.5 X

10 = 0.5X

X = 10/0.5

X= 20

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.

me! what did you put for this question?

step-by-step explanation: