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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Transcribed Image Text:The image contains four graphs, each displaying a straight line plotted on a Cartesian coordinate system ranging from -10 to 10 on both the x and y axes. Below is a detailed description of each graph:
1. **Graph 1:**
- The line passes through the origin (0,0) with a positive slope. It moves upwards from the bottom left towards the top right of the graph.
- This indicates a direct relationship between the x and y values, where both increase together.
2. **Graph 2:**
- The line has a negative slope, moving from the top left towards the bottom right of the graph.
- This suggests an inverse relationship, where y decreases as x increases.
3. **Graph 3:**
- Similar to Graph 1, this line also has a positive slope and passes through the origin.
- It reflects a proportional increase between x and y values.
4. **Graph 4:**
- The line has a positive slope but passes through (0, -10) on the y-axis.
- This indicates a linear relationship with a y-intercept of -10, shifting the entire line downwards compared to the origin-based lines in Graphs 1 and 3.
These graphs are useful for understanding the basic concepts of linear relationships and the effects of different slopes and intercepts on a line’s position in the coordinate plane.

Transcribed Image Text:**Graph the Linear Function Using the Slope and Y-intercept**
Equation given: \( y = \frac{1}{2}x + 5 \)
**Explanation of Graphs:**
The task is to graph the linear equation using the slope (\( \frac{1}{2} \)) and the y-intercept (5).
1. **First Graph:**
- The line intersects the y-axis at 5, which is correct according to the y-intercept given in the equation.
- The slope of \( \frac{1}{2} \) is visualized as the line moves up by 1 unit for every 2 units it moves to the right.
2. **Second Graph:**
- This graph also displays a line through the point (0, 5) on the y-axis.
- The slope appears consistent with \( \frac{1}{2} \) as it rises by 1 unit for every 2 units moved to the right.
3. **Third Graph:**
- The line does not align with the correct y-intercept or slope.
- It intersects the y-axis at a different point and has a negative slope, indicating an incorrect representation of the equation.
The correct graph for the equation \( y = \frac{1}{2}x + 5 \) is the one where the line passes through the y-axis at 5 and follows a slope pattern of rising 1 unit vertically for every 2 units horizontally. The first two graphs align with these criteria.
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