Write the equation of the line with the given information (y-mx+b format).

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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**Title: Writing the Equation of a Line in Slope-Intercept Form**

**Objective:**
Write the equation of the line using the information provided in the graph and express it in the slope-intercept format (y = mx + b).

**Instructions:**
Refer to the graph below and utilize the given points to derive the equation of the line.

**Graph Description:**
The provided graph shows a coordinate plane with an x-axis and a y-axis intersecting at the origin (0,0). The graph contains a line that passes through two notable points:
1. The y-intercept at (0, 1).
2. Another point at (3, 4).

These points can be used to determine the slope (m) and the y-intercept (b) of the equation in the slope-intercept form, y = mx + b.

**Steps to Find the Equation:**

1. **Identify the Points:**
   - The graph shows the line passing through the points (0, 1) and (3, 4).

2. **Calculate the Slope (m):**
   - Slope formula: \( m = \frac{y_2 - y_1}{x_2 - x_1} \)
   - Using points (0, 1) and (3, 4):
     \[ m = \frac{4 - 1}{3 - 0} = \frac{3}{3} = 1 \]

3. **Determine the Y-Intercept (b):**
   - The y-intercept is where the line crosses the y-axis (point (0, 1)), therefore, \( b = 1 \).

4. **Write the Equation:**
   - Substitute the calculated slope (m) and y-intercept (b) into the slope-intercept form:
     \[ y = mx + b \]
     \[ y = 1x + 1 \]

**Conclusion:**
The equation of the line represented in the given graph is:

\[ y = x + 1 \]
Transcribed Image Text:**Title: Writing the Equation of a Line in Slope-Intercept Form** **Objective:** Write the equation of the line using the information provided in the graph and express it in the slope-intercept format (y = mx + b). **Instructions:** Refer to the graph below and utilize the given points to derive the equation of the line. **Graph Description:** The provided graph shows a coordinate plane with an x-axis and a y-axis intersecting at the origin (0,0). The graph contains a line that passes through two notable points: 1. The y-intercept at (0, 1). 2. Another point at (3, 4). These points can be used to determine the slope (m) and the y-intercept (b) of the equation in the slope-intercept form, y = mx + b. **Steps to Find the Equation:** 1. **Identify the Points:** - The graph shows the line passing through the points (0, 1) and (3, 4). 2. **Calculate the Slope (m):** - Slope formula: \( m = \frac{y_2 - y_1}{x_2 - x_1} \) - Using points (0, 1) and (3, 4): \[ m = \frac{4 - 1}{3 - 0} = \frac{3}{3} = 1 \] 3. **Determine the Y-Intercept (b):** - The y-intercept is where the line crosses the y-axis (point (0, 1)), therefore, \( b = 1 \). 4. **Write the Equation:** - Substitute the calculated slope (m) and y-intercept (b) into the slope-intercept form: \[ y = mx + b \] \[ y = 1x + 1 \] **Conclusion:** The equation of the line represented in the given graph is: \[ y = x + 1 \]
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