Question 103 of 190 FINAL - Mathematics Which statement best describes the relationship between lines M and N? M (2,7) (1,4)- 3) A. Line M has a positive slope, and line N has a negative slope. B. Line M has a negative slope, and line N has a positive slope. C. Line M and line N both have positive slopes. D. Line M and line N both have negative slopes. E. There is not enough information to calculate the slopes of line N and line M. (3,5)

Elementary Geometry For College Students, 7e
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### Question 103 of 190
**FINAL - Mathematics**

**Which statement best describes the relationship between lines M and N?**

#### Diagram Analysis:
The diagram presents a Cartesian coordinate system with two lines, labeled M and N, intersecting at different points.

Here are the coordinates for the lines shown in the graph:

- **Line M**:
  - Passes through the points (1, 3) and (4, 5)
  
- **Line N**:
  - Passes through the points (1, 4) and (2, 7)

#### Calculation of Slopes:
To determine the relationship between the slopes of the lines, we will calculate the slope (m) of each line using the formula:
\[ m = \frac{\Delta y}{\Delta x} = \frac{y_2 - y_1}{x_2 - x_1} \]

**Line M**:
- Points: (1, 3) and (4, 5)
- Slope (m) of Line M:
  \[ m = \frac{5 - 3}{4 - 1} = \frac{2}{3} \]

**Line N**:
- Points: (1, 4) and (2, 7)
- Slope (m) of Line N:
  \[ m = \frac{7 - 4}{2 - 1} = \frac{3}{1} = 3 \]

#### Answer Choices Evaluation:
- **A.** Line M has a positive slope, and line N has a negative slope.
- **B.** Line M has a negative slope, and line N has a positive slope.
- **C.** Line M and line N both have positive slopes.
- **D.** Line M and line N both have negative slopes.
- **E.** There is not enough information to calculate the slopes of line N and line M.

Based on the calculated slopes:
- Line M has a slope of \( \frac{2}{3} \), which is positive.
- Line N has a slope of \( 3 \), which is also positive.

Thus, the correct answer is:
**C. Line M and line N both have positive slopes.**
Transcribed Image Text:### Question 103 of 190 **FINAL - Mathematics** **Which statement best describes the relationship between lines M and N?** #### Diagram Analysis: The diagram presents a Cartesian coordinate system with two lines, labeled M and N, intersecting at different points. Here are the coordinates for the lines shown in the graph: - **Line M**: - Passes through the points (1, 3) and (4, 5) - **Line N**: - Passes through the points (1, 4) and (2, 7) #### Calculation of Slopes: To determine the relationship between the slopes of the lines, we will calculate the slope (m) of each line using the formula: \[ m = \frac{\Delta y}{\Delta x} = \frac{y_2 - y_1}{x_2 - x_1} \] **Line M**: - Points: (1, 3) and (4, 5) - Slope (m) of Line M: \[ m = \frac{5 - 3}{4 - 1} = \frac{2}{3} \] **Line N**: - Points: (1, 4) and (2, 7) - Slope (m) of Line N: \[ m = \frac{7 - 4}{2 - 1} = \frac{3}{1} = 3 \] #### Answer Choices Evaluation: - **A.** Line M has a positive slope, and line N has a negative slope. - **B.** Line M has a negative slope, and line N has a positive slope. - **C.** Line M and line N both have positive slopes. - **D.** Line M and line N both have negative slopes. - **E.** There is not enough information to calculate the slopes of line N and line M. Based on the calculated slopes: - Line M has a slope of \( \frac{2}{3} \), which is positive. - Line N has a slope of \( 3 \), which is also positive. Thus, the correct answer is: **C. Line M and line N both have positive slopes.**
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