A) Identify the center and radius of each equation below. Note: Ifr² is not a perfect square then leave r in simplified radical form but use the decimal equivalent for graphing. Example: J12 = 2/3 = 3.46 Standard Graphing Equation |(x-2 )* + (y- 5 )° = 144 (x-0)²+ (y-7 )’ = 625 |(x-15)² + (y+8 )² = 289 (x+ 11)’ + (y + 6 )² = 324 |(x+4)°+ (y-9 )’ = 196 Eq. # Radius Center 1 2 %3D 5 3. 4.

Elementary Geometry For College Students, 7e
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ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
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### Identifying the Center and Radius of Each Equation

When given an equation of the form \((x - h)^2 + (y - k)^2 = r^2\), you can determine the center and radius of the circle:
- The center of the circle is \((h, k)\).
- The radius of the circle is \(r\), which is the square root of \(r^2\).

**Note**: 
- If \(r^2\) is not a perfect square, leave \(r\) in its simplified radical form, but use the decimal equivalent for graphing. 
- Example: \(\sqrt{12} = 2\sqrt{3} = 3.46\).

Here are the equations along with their corresponding centers and radii.

| Eq. # | Standard Graphing Equation                | Radius | Center   |
|-------|-------------------------------------------|--------|----------|
| 1     | \((x - 2)^2 + (y - 5)^2 = 144\)           | 12     | (2, 5)   |
| 2     | \((x - 0)^2 + (y - 7)^2 = 625\)           | 25     | (0, 7)   |
| 3     | \((x - 15)^2 + (y + 8)^2 = 289\)          | 17     | (15, -8) |
| 4     | \((x + 11)^2 + (y + 6)^2 = 324\)          | 18     | (-11, -6)|
| 5     | \((x + 4)^2 + (y - 9)^2 = 196\)           | 14     | (-4, 9)  |

This table helps summarize and identify the important attributes of each circle based on the given standard form equations.
Transcribed Image Text:### Identifying the Center and Radius of Each Equation When given an equation of the form \((x - h)^2 + (y - k)^2 = r^2\), you can determine the center and radius of the circle: - The center of the circle is \((h, k)\). - The radius of the circle is \(r\), which is the square root of \(r^2\). **Note**: - If \(r^2\) is not a perfect square, leave \(r\) in its simplified radical form, but use the decimal equivalent for graphing. - Example: \(\sqrt{12} = 2\sqrt{3} = 3.46\). Here are the equations along with their corresponding centers and radii. | Eq. # | Standard Graphing Equation | Radius | Center | |-------|-------------------------------------------|--------|----------| | 1 | \((x - 2)^2 + (y - 5)^2 = 144\) | 12 | (2, 5) | | 2 | \((x - 0)^2 + (y - 7)^2 = 625\) | 25 | (0, 7) | | 3 | \((x - 15)^2 + (y + 8)^2 = 289\) | 17 | (15, -8) | | 4 | \((x + 11)^2 + (y + 6)^2 = 324\) | 18 | (-11, -6)| | 5 | \((x + 4)^2 + (y - 9)^2 = 196\) | 14 | (-4, 9) | This table helps summarize and identify the important attributes of each circle based on the given standard form equations.
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