Responder
**a. Slope-Intercept Form:**
\[ y = -\frac{5}{7}x + 5 \]
**b. Slope and \( y \)-intercept:**
- **Slope (\( m \))**: \( -\frac{5}{7} \)
- **\( y \)-intercept (\( b \))**: 5
**c. Graph:**
Plot the point \( (0, 5) \) and another point using the slope \( -\frac{5}{7} \) (e.g., \( (7, 0) \)), then draw a straight line through these points.
Solución
Sure, let's work through each part of the problem step by step.
### **a. Rewrite the equation in slope-intercept form.**
**Given Equation:**
\[ 5x + 7y - 35 = 0 \]
**Slope-Intercept Form:**
The slope-intercept form of a linear equation is:
\[ y = mx + b \]
where:
- \( m \) is the slope
- \( b \) is the y-intercept
**Steps to Rewrite:**
1. **Isolate the \( y \)-term:**
\[
7y = -5x + 35
\]
2. **Solve for \( y \):**
\[
y = \frac{-5}{7}x + 5
\]
**Final Slope-Intercept Form:**
\[
y = -\frac{5}{7}x + 5
\]
---
### **b. Identify the slope and \( y \)-intercept.**
From the slope-intercept form:
\[
y = -\frac{5}{7}x + 5
\]
- **Slope (\( m \))**:
\[
m = -\frac{5}{7}
\]
- **\( y \)-intercept (\( b \))**:
\[
b = 5
\]
This means the line crosses the \( y \)-axis at the point \( (0, 5) \).
---
### **c. Graph the linear function using the slope and \( y \)-intercept.**
**Steps to Graph:**
1. **Plot the \( y \)-intercept:**
- Start by plotting the point \( (0, 5) \) on the graph.
2. **Use the slope to find another point:**
- The slope \( m = -\frac{5}{7} \) can be interpreted as "rise over run."
- **Rise:** -5 (since the slope is negative, move down)
- **Run:** 7 (move to the right)
Starting from \( (0, 5) \):
- Move right 7 units to \( x = 7 \).
- Move down 5 units to \( y = 0 \).
- Plot the second point at \( (7, 0) \).
3. **Draw the line:**
- Connect the two points \( (0, 5) \) and \( (7, 0) \) with a straight line.
- Extend the line across the graph in both directions.
**Graph Illustration:**
```
y
|
5 | * (0,5)
|
4 |
|
3 |
|
2 |
|
1 |
|
0 |-------------------------- x
0 7
```
- The asterisk (*) represents the \( y \)-intercept at \( (0, 5) \).
- The point at \( (7, 0) \) is also plotted.
- Draw a straight line through these points to represent the linear function \( y = -\frac{5}{7}x + 5 \).
---
This completes all parts of the problem. You can use graphing paper or a graphing tool to visualize the line accurately.
Revisado y aprobado por el equipo de tutoría de UpStudy
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