Question
Lines \( \leftarrow \quad \begin{array}{l}\text { Give the slope and the } y \text {-intercept of the line with the given equation. Then, graph } \\ \text { the linear equation. } 1 \text { of } 3\end{array} \) \( y=4 x+5 \)
Ask by Lambert Bowers. in the United States
Mar 10,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
The line has a slope of 4 and a \(y\)-intercept at (0, 5). To graph it, start at (0, 5) and move up 4 units and right 1 unit to plot another point, then draw a straight line through these points.
Solution
1. The line is given in slope-intercept form:
\[
y = 4x + 5
\]
2. In the equation \(\displaystyle y = mx + b\), the slope is given by \(\displaystyle m\) and the \(y\)-intercept by \(\displaystyle b\).
3. From the equation, the slope is
\[
m = 4
\]
and the \(y\)-intercept is
\[
b = 5\quad \text{or the point } (0, 5).
\]
4. To graph the line:
- Start at the \(y\)-intercept, \((0, 5)\).
- Since the slope is \(4\), which means \(\frac{4}{1}\), rise \(4\) units and run \(1\) unit to the right. This brings you to the point \((1, 9)\).
- Continue using the slope to plot additional points if needed or draw a straight line through the points.
5. The final result:
- **Slope:** \(\displaystyle 4\)
- **\(y\)-intercept:** \(\displaystyle (0, 5)\)
Graph these points on the Cartesian plane and draw a line through them to represent the equation.
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Bonus Knowledge
The slope of the line given by the equation \( y = 4x + 5 \) is 4, which means that for every unit increase in \( x \), \( y \) increases by 4 units. The y-intercept is 5, indicating that the line crosses the y-axis at the point (0, 5). To graph this equation, start at the y-intercept (0, 5) on the graph. From there, use the slope to rise 4 units and run 1 unit to the right to find another point on the line at (1, 9). Connecting these points will give you a straight line that extends in both directions, typically shown with arrows at the ends.