Respuesta :
Answer:
(x+3)² + (y+4)²=25
Step-by-step explanation:
The question is on equation of a circle
The distance formula is given by;
√(x-h)²+ (y-k)²=r
The standard equation of circle is given as ;
(x-h)²+ (y-k)²=r²
The equation of this circle with center (-3, -4) and radius 5 will be;
(x--3)² + (y--4)²=5²
(x+3)² + (y+4)²=25
ANSWER
[tex]{(x + 3)}^{2} + {(y + 4)}^{2} = 25[/tex]
EXPLANATION
The equation of a circle with center (h,k) and radius r units is given by:
[tex]{(x - h)}^{2} + {(y - k)}^{2} = {r}^{2} [/tex]
From the given information the center of the circle is (-3,-4) and the radius is r=5 units.
We substitute the known values to obtain:
[tex]{(x - - 3)}^{2} + {(y - - 4)}^{2} = {5}^{2} [/tex]
We simplify to get:
[tex]{(x + 3)}^{2} + {(y + 4)}^{2} = 25[/tex]
Therefore the equation of the circle in standard form is:
[tex]{(x + 3)}^{2} + {(y + 4)}^{2} = 25[/tex]