Respuesta :

Equation for a circle function is (x-a)²+(y+b)²=r², where point R(a;b) is a centre.
Answer: (2;4).

Answer:

(2,-4)

Step-by-step explanation:

The equation of a circle is: [tex](x-h)^2+(y-K)^2=r^2[/tex]

X y Y are any point in the circle

h y K are the center of the circle

r is the ratio (distance between the center and any point of the circle)

If you have this equation: [tex](x-2)^2+(y+4)^2=r^2[/tex]

You can replace in the basic equation of a circle in this way:

[tex](x-h)^2+(y-K)^2=r^2[/tex] is equal to [tex](x-2)^2+(y-(-4))^2=5^2[/tex]

And you get: [tex](x-2)^2+(y+4)^2=5^2[/tex]

where:

h=2

K=-4

r=5

Then, the center of the circle is (2,-4)