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Find the circle center and it’s radius :

[tex][tex]\[
(x + 4)^2 + y^2 = 16
\][/tex][/tex]

Sagot :

Answer:

The circle's center is at (-4,0) and has a radius of 4.

Step-by-step explanation:

The Circle Equation

Recall the format of the equation of a circle,

                                [tex](x-h)^2+(y-k)^2=r^2[/tex],

where (h, k) is the center of the circle and r is the radius.

Apply the Circle Equation

We're given the equation,

                                    [tex](x+4)^2+y^2=16[/tex].

Since there is no integer after the y squared term, k must be 0 so, the center is at (-4, 0).

Since 16 is the radius' value squared, taking the square root of 16 will give us the length of the circle's radius or 4.