supresfunny supresfunny
  • 25-07-2020
  • Mathematics
contestada

A circle has a center at (4, -7) and a radius of 4 units. Write an equation of this circle.

Respuesta :

ashleysong2012 ashleysong2012
  • 25-07-2020

Answer:

(x – 4)^2 + (y + 7)^2 = 16

Step-by-step explanation:

The formula of a circle is:

(x – h)^2 + (y – k)^2 = r^2

(h, k) represents the coordinates of the center of the circle

r represents the radius of the circle

If you plug in the given information, you get:

(x – 4)^2 + (y – (-7))^2 = 4^2

which simplifies into:

(x – 4)^2 + (y + 7)^2 = 16

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