Graph the linear equation: y = 3

Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
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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**2. Graph the Linear Equation: \( y = 3 \)**

The task is to graph the linear equation \( y = 3 \). 

### Detailed Explanation:

**Description of the Graph:**

The graph has the following key features:
- It represents a standard Cartesian coordinate system with the x-axis (horizontal) and the y-axis (vertical).
- The x-axis is labeled with values from -5 to 5.
- The y-axis is labeled with values from -5 to 5.
- Both axes are marked with grid lines for each integer value.

To graph the equation \( y = 3 \):
1. Identify the value of y in the equation, which is 3.
2. Draw a horizontal line that passes through the y-coordinate of 3.

Since this is a horizontal line, it remains constant for all values of x. Therefore, every point on this line will have a y-coordinate of 3. 

**Graph Visualization:**

The graph consists of a horizontal line passing through the y-coordinate of 3 and extending infinitely in both directions along the x-axis. This can be visually represented by drawing a straight line across the points (x, 3) for all x values.

**Understanding Horizontal Lines:**

For any linear equation in the form \( y = c \), where \( c \) is a constant, the resulting graph is a horizontal line at the y-coordinate \( c \). In this particular case, \( c = 3 \).

**Importance in Learning:**

Graphs like this illustrate the relationship between x and y in a straightforward manner, showcasing how variations in one variable (x) have no effect on the other variable (y) when the equation is in this form. It simplifies the understanding of constant functions and lays the foundation for more complex concepts in linear algebra and calculus.
Transcribed Image Text:**2. Graph the Linear Equation: \( y = 3 \)** The task is to graph the linear equation \( y = 3 \). ### Detailed Explanation: **Description of the Graph:** The graph has the following key features: - It represents a standard Cartesian coordinate system with the x-axis (horizontal) and the y-axis (vertical). - The x-axis is labeled with values from -5 to 5. - The y-axis is labeled with values from -5 to 5. - Both axes are marked with grid lines for each integer value. To graph the equation \( y = 3 \): 1. Identify the value of y in the equation, which is 3. 2. Draw a horizontal line that passes through the y-coordinate of 3. Since this is a horizontal line, it remains constant for all values of x. Therefore, every point on this line will have a y-coordinate of 3. **Graph Visualization:** The graph consists of a horizontal line passing through the y-coordinate of 3 and extending infinitely in both directions along the x-axis. This can be visually represented by drawing a straight line across the points (x, 3) for all x values. **Understanding Horizontal Lines:** For any linear equation in the form \( y = c \), where \( c \) is a constant, the resulting graph is a horizontal line at the y-coordinate \( c \). In this particular case, \( c = 3 \). **Importance in Learning:** Graphs like this illustrate the relationship between x and y in a straightforward manner, showcasing how variations in one variable (x) have no effect on the other variable (y) when the equation is in this form. It simplifies the understanding of constant functions and lays the foundation for more complex concepts in linear algebra and calculus.
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