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Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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**Translating Problems with Equations**

In this educational section, we will explore how to translate real-world problems into mathematical equations. We will use diagrams and graphical representations to illustrate these concepts.

**Diagram Explanation:**

The graph provided contains three distinct lines:

1. Two vertical lines extending infinitely in both upward and downward directions. 
2. A diagonal line intersecting the two vertical lines.

**Labels on the Graph:**

- The horizontal distance between the vertical lines is represented by the expression \( x + 3 \).
- The diagonal line segment between the intersection points on the two vertical lines is represented by the expression \( 2x - 1 \).

**Interpreting the Diagram:**

1. **Vertical Lines:** These are likely representing two distinct positions or boundaries which we need to consider in our problem.
2. **Diagonal Line Segment:** This line represents a transformation or relationship between the values \( x + 3 \) and \( 2x - 1 \).

**Mathematical Translation:**

- We can set up an equation to find the values of \( x \), assuming these expressions are equal at the point of intersection.

For example, if we want to solve for \( x \):
\[ 2x - 1 = x + 3 \]

**Steps to Solve the Equation:**
1. Subtract \( x \) from both sides:
   \[ 2x - x - 1 = 3 \]
   \[ x - 1 = 3 \]

2. Add 1 to both sides:
   \[ x = 4 \]

Through this process, we have determined the value of \( x \) which satisfies the given expressions in the diagram.

In summary, the diagram with the vertical and diagonal lines helps us visualize the relationships between different expressions and serve as a basis for translating and solving algebraic equations.

---

This example illustrates how visual aids can help in understanding complex mathematical problems and developing the skills to translate and solve equations from real-world scenarios.
Transcribed Image Text:**Translating Problems with Equations** In this educational section, we will explore how to translate real-world problems into mathematical equations. We will use diagrams and graphical representations to illustrate these concepts. **Diagram Explanation:** The graph provided contains three distinct lines: 1. Two vertical lines extending infinitely in both upward and downward directions. 2. A diagonal line intersecting the two vertical lines. **Labels on the Graph:** - The horizontal distance between the vertical lines is represented by the expression \( x + 3 \). - The diagonal line segment between the intersection points on the two vertical lines is represented by the expression \( 2x - 1 \). **Interpreting the Diagram:** 1. **Vertical Lines:** These are likely representing two distinct positions or boundaries which we need to consider in our problem. 2. **Diagonal Line Segment:** This line represents a transformation or relationship between the values \( x + 3 \) and \( 2x - 1 \). **Mathematical Translation:** - We can set up an equation to find the values of \( x \), assuming these expressions are equal at the point of intersection. For example, if we want to solve for \( x \): \[ 2x - 1 = x + 3 \] **Steps to Solve the Equation:** 1. Subtract \( x \) from both sides: \[ 2x - x - 1 = 3 \] \[ x - 1 = 3 \] 2. Add 1 to both sides: \[ x = 4 \] Through this process, we have determined the value of \( x \) which satisfies the given expressions in the diagram. In summary, the diagram with the vertical and diagonal lines helps us visualize the relationships between different expressions and serve as a basis for translating and solving algebraic equations. --- This example illustrates how visual aids can help in understanding complex mathematical problems and developing the skills to translate and solve equations from real-world scenarios.
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