Questions: Give the center and radius, then sketch the graph of the circle: (x-2)^2+(y+4)^2=4
Transcript text: Give the center and radius, then sketch the graph of the circle: $(x-2)^{2}+(y+4)^{2}=4$
Solution
Solution Steps
Step 1: Identify the center and radius of the circle
The given equation of the circle is \((x - 2)^2 + (y + 4)^2 = 4\). This is in the standard form \((x - h)^2 + (y - k)^2 = r^2\), where \((h, k)\) is the center and \(r\) is the radius.
Center \((h, k)\): \((2, -4)\)
Radius \(r\): \(\sqrt{4} = 2\)
Step 2: Plot the center of the circle
On the given graph, locate the point \((2, -4)\) and mark it as the center of the circle.
Step 3: Draw the circle with the given radius
From the center \((2, -4)\), measure a distance of 2 units in all directions (up, down, left, right) and draw the circle passing through these points.
Final Answer
Center: \((2, -4)\)
Radius: \(2\)
Graph: Circle centered at \((2, -4)\) with radius 2 units.