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📚 Topic Summary
Converting a hyperbola from its general form to its standard form involves completing the square for both the $x$ and $y$ terms. The goal is to rewrite the equation in a form that reveals the hyperbola's center, vertices, and foci. By completing the square, we can isolate the squared terms and express the equation in either of the standard forms:
$\frac{(x-h)^2}{a^2} - \frac{(y-k)^2}{b^2} = 1$ (horizontal transverse axis) or $\frac{(y-k)^2}{a^2} - \frac{(x-h)^2}{b^2} = 1$ (vertical transverse axis). Remember to correctly identify and factor out any coefficients before completing the square!
🧮 Part A: Vocabulary
Match the terms with their definitions:
- Term: Center
- Term: Transverse Axis
- Term: Conjugate Axis
- Term: Asymptote
- Term: Focus
Definitions:
- A line that the hyperbola approaches but never touches.
- The midpoint of the segment connecting the vertices.
- A point inside the hyperbola used to define its shape.
- The axis that passes through the vertices.
- The axis perpendicular to the transverse axis, passing through the center.
| Term | Definition |
|---|---|
| Center | The midpoint of the segment connecting the vertices. |
| Transverse Axis | The axis that passes through the vertices. |
| Conjugate Axis | The axis perpendicular to the transverse axis, passing through the center. |
| Asymptote | A line that the hyperbola approaches but never touches. |
| Focus | A point inside the hyperbola used to define its shape. |
✍️ Part B: Fill in the Blanks
To convert the general form of a hyperbola to standard form, we must first ____________ the terms and then complete the ____________ for both $x$ and $y$. The standard form reveals the ____________ of the hyperbola, which is crucial for graphing and analysis. Make sure to properly identify if the ____________ axis is horizontal or vertical. Finally, remember to divide by the appropriate constant to achieve ____________ on the right side of the equation.
Answer Key: group, square, center, transverse, 1
🤔 Part C: Critical Thinking
Explain in your own words why completing the square is a necessary step in converting the general form of a hyperbola to its standard form. What information does the standard form provide that the general form does not?
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