What is the equation of the circle with center (-1,-2) and passes through the point (6,4)?

which of the following points is also located on the circle?
a. (6,-6)
b. (-10,0)
c. (-6,4)

and B

Step-by-step explanation:

To write the equation of a circle, use the formula where the center of the circle is (h, k).

This means the equation is .

Find the radius r by finding the distance between (-1,-2) and (6,4) using the distance formula.

Since the radius is √85 and therefore .

The equation is .

To see what other point is on the circle, substitute the (x,y) in the equation.

(-10+1)^2 + (0+2)^2 = 85

81 + 4 = 85

85 = 85

The point (-10,0) is on the circle.

idk

step-by-step explanation:

use that smart brain

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.