A circle is drawn on a coordinate plane with the center point at (-4, 6) and a radius of 2. Fill in the missing information to find the equation of the circle.(3 points)

(x -
)2 + (y -
)2=

1 answer

The general equation of a circle with center \((h, k)\) and radius \(r\) is given by:

\[ (x - h)^2 + (y - k)^2 = r^2 \]

In your case, the center of the circle is at \((-4, 6)\) (\(h = -4\) and \(k = 6\)) and the radius is \(2\) (\(r = 2\)).

First, we need to calculate \(r^2\):

\[ r^2 = 2^2 = 4 \]

Now we can fill in the missing information in the equation format:

\[ (x - (-4))^2 + (y - 6)^2 = 4 \]

This simplifies to:

\[ (x + 4)^2 + (y - 6)^2 = 4 \]

So the final equation of the circle is:

\[ (x + 4)^2 + (y - 6)^2 = 4 \]

Thus, the filled information is:

  • \(h = -4\)
  • \(k = 6\)
  • \(r^2 = 4\)

So the equation can be expressed as:

\[ (x - (-4))^2 + (y - 6)^2 = 4 \]

or simply

\[ (x + 4)^2 + (y - 6)^2 = 4 \]