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Checkpoint Sketch the graph of \( (x+2)^{2}+(y-2)^{2}<16 \)

Ask by Fowler Ellis. in the United States
Jan 22,2025

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Answer

To sketch the graph of \( (x+2)^{2}+(y-2)^{2}<16 \), draw a circle with center at \( (-2, 2) \) and radius 4. Shade the area inside the circle, using a dashed line for the boundary.

Solution

To sketch the graph of the inequality \( (x+2)^{2}+(y-2)^{2}<16 \), we can follow these steps: 1. **Identify the type of graph**: The expression \( (x+2)^{2}+(y-2)^{2}=16 \) represents a circle. The inequality \( < 16 \) indicates that we are interested in the area inside this circle. 2. **Determine the center and radius**: - The center of the circle is at the point \( (-2, 2) \). - The radius \( r \) can be found by taking the square root of 16, which gives \( r = 4 \). 3. **Draw the circle**: - Plot the center at \( (-2, 2) \). - From the center, measure 4 units in all directions (up, down, left, right) to find the points on the circle: - Up: \( (-2, 6) \) - Down: \( (-2, -2) \) - Left: \( (-6, 2) \) - Right: \( (2, 2) \) 4. **Sketch the circle**: - Draw a circle with the center at \( (-2, 2) \) and passing through the points identified above. 5. **Shade the interior**: - Since the inequality is \( < 16 \), shade the area inside the circle to indicate that all points within this region satisfy the inequality. 6. **Boundary**: - The boundary of the circle itself (where \( (x+2)^{2}+(y-2)^{2}=16 \)) is not included in the solution set, so you can represent this with a dashed line. This process will give you a clear sketch of the graph for the inequality \( (x+2)^{2}+(y-2)^{2}<16 \).

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Beyond the Answer

The inequality \( (x+2)^{2}+(y-2)^{2}<16 \) represents the interior of a circle centered at the point (-2, 2) with a radius of 4. To sketch the graph, start by plotting the center at (-2, 2). Then, measure 4 units in all directions (up, down, left, and right) from the center to draw the boundary circle. Since the inequality is strict (<), the boundary of the circle will not be included, so use a dashed line for the circle itself. The area inside the circle is where the inequality holds true. Now, let’s add some fun! Did you know that the equation of a circle stems from the Pythagorean theorem? Just like finding the distance from the center to a point on the circle, this inequality uses the same concept of 'distance' to define what lies inside the circle! It’s like a cozy little space right around the center where all the points love to hang out!

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