2. For the equations given, identify vertex, stretch and directic а. у3 2(х+4)? — 2 b. y= 3(x- vertex: vertex: stretch stretch opens opens

Algebra and Trigonometry (6th Edition)
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Author:Robert F. Blitzer
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ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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**Identifying Vertex, Stretch, and Direction of Parabolic Equations**

### Exercise 2: For the equations given, identify the vertex, stretch, and direction, then graph.

#### a. \( y = 2(x + 4)^2 - 2 \)
- **Vertex:** 
- **Stretch:** 
- **Opens:** 

Graph on a coordinate plane with both X and Y-axes marked, with arrows indicating positive directions.

#### b. \( y = 3(x - 2)^2 - 3 \)
- **Vertex:** 
- **Stretch:** 
- **Opens:** 

Graph on a coordinate plane with both X and Y-axes marked, with arrows indicating positive directions.

**Graph Explanations:**

Each equation represents a parabolic curve (a quadratic function). In exercises like these:

- The **vertex** is the point (h, k) in the vertex form of a quadratic equation \( y = a(x-h)^2 + k \), where the parabola reaches its maximum or minimum value.
- The **stretch** refers to the factor by which the parabola is stretched vertically. If \(|a| > 1\), the parabola is narrower than the standard \( y = x^2 \) parabola, if \(|a| < 1\), it is wider.
- The **direction** tells whether the parabola opens upwards (if \(a\) > 0) or downwards (if \(a\) < 0).

For the given equations:

1. **For \( y = 2(x + 4)^2 - 2 \):**
   - **Vertex:** \((-4, -2)\)
   - **Stretch:** Stretched by a factor of 2
   - **Opens:** Upwards

2. **For \( y = 3(x - 2)^2 - 3 \):**
   - **Vertex:** \((2, -3)\)
   - **Stretch:** Stretched by a factor of 3
   - **Opens:** Upwards

The provided grids are standard Cartesian coordinate planes with X and Y-axes, with each intersection of lines forming small squares to help with accurately plotting points. Both vertex points and the subsequent parabolic shapes should be plotted respectively on these grids after evaluating the equations.
Transcribed Image Text:**Identifying Vertex, Stretch, and Direction of Parabolic Equations** ### Exercise 2: For the equations given, identify the vertex, stretch, and direction, then graph. #### a. \( y = 2(x + 4)^2 - 2 \) - **Vertex:** - **Stretch:** - **Opens:** Graph on a coordinate plane with both X and Y-axes marked, with arrows indicating positive directions. #### b. \( y = 3(x - 2)^2 - 3 \) - **Vertex:** - **Stretch:** - **Opens:** Graph on a coordinate plane with both X and Y-axes marked, with arrows indicating positive directions. **Graph Explanations:** Each equation represents a parabolic curve (a quadratic function). In exercises like these: - The **vertex** is the point (h, k) in the vertex form of a quadratic equation \( y = a(x-h)^2 + k \), where the parabola reaches its maximum or minimum value. - The **stretch** refers to the factor by which the parabola is stretched vertically. If \(|a| > 1\), the parabola is narrower than the standard \( y = x^2 \) parabola, if \(|a| < 1\), it is wider. - The **direction** tells whether the parabola opens upwards (if \(a\) > 0) or downwards (if \(a\) < 0). For the given equations: 1. **For \( y = 2(x + 4)^2 - 2 \):** - **Vertex:** \((-4, -2)\) - **Stretch:** Stretched by a factor of 2 - **Opens:** Upwards 2. **For \( y = 3(x - 2)^2 - 3 \):** - **Vertex:** \((2, -3)\) - **Stretch:** Stretched by a factor of 3 - **Opens:** Upwards The provided grids are standard Cartesian coordinate planes with X and Y-axes, with each intersection of lines forming small squares to help with accurately plotting points. Both vertex points and the subsequent parabolic shapes should be plotted respectively on these grids after evaluating the equations.
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