Write the equation of the circle graphed below

x² + (y-3)² = 9, or x² + y² - 6y = 0

Step-by-step explanation:

The equation of a circle is

(x-h)² + (y-k)² = r², where (h, k) is the center of the circle and r is the radius.

In this circle, the center is at (0, 3) and the radius is 3:

(x-0)² + (y-3)² = 3²

x² + (y-3)(y-3) = 9

x² + y² - 3y - 3y + 9 = 9

x² + y² - 6y + 9 = 9

x² + y² - 6y + 9 - 9 = 9 - 9

x² + y² - 6y = 0

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.

no this is a nonlinear negative