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Sketch the graph of each line. \[ \begin{array}{ll}\text { 1) } y=\frac{1}{4} x-1 & b=-1\end{array} \]

Ask by Jimenez Adkins. in the United States
Jan 22,2025

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Answer

To sketch the graph of \( y = \frac{1}{4}x - 1 \), plot the y-intercept at \( (0, -1) \) and another point using the slope \( \frac{1}{4} \), such as \( (4, 0) \). Draw a straight line through these points, extending in both directions.

Solution

To sketch the graph of the line \( y = \frac{1}{4}x - 1 \), follow these steps: ### 1. Identify the Slope and Y-Intercept - **Slope (m):** \( \frac{1}{4} \) - **Y-Intercept (b):** \( -1 \) ### 2. Plot the Y-Intercept The y-intercept is the point where the line crosses the y-axis. For this equation: - **Point:** \( (0, -1) \) ### 3. Use the Slope to Find Another Point The slope \( \frac{1}{4} \) means that for every increase of 4 units in \( x \) (run), \( y \) increases by 1 unit (rise). Starting from the y-intercept \( (0, -1) \): - **Rise:** 1 unit up - **Run:** 4 units to the right - **Second Point:** \( (4, 0) \) ### 4. Draw the Line - Plot the two points \( (0, -1) \) and \( (4, 0) \) on a coordinate plane. - Use a ruler to draw a straight line passing through these points. - Extend the line in both directions beyond the plotted points. ### 5. Label the Graph - **XAxis:** Label as \( x \) - **YAxis:** Label as \( y \) - **Points:** Mark and label the points \( (0, -1) \) and \( (4, 0) \) - **Line:** Optionally, write the equation \( y = \frac{1}{4}x - 1 \) alongside the line for clarity. ### Visual Representation While I can't provide an actual sketch here, following the steps above will help you visualize the line: 1. Start at \( (0, -1) \) on the y-axis. 2. Move right 4 units and up 1 unit to reach \( (4, 0) \). 3. Draw a straight line through these points extending infinitely in both directions. The line will slope gently upward from left to right, reflecting the positive slope of \( \frac{1}{4} \). --- **Summary:** - **Equation:** \( y = \frac{1}{4}x - 1 \) - **Slope:** \( \frac{1}{4} \) (gentle upward slope) - **Y-Intercept:** \( (0, -1) \) - **Another Point:** \( (4, 0) \) - **Graph:** A straight line passing through \( (0, -1) \) and \( (4, 0) \), extending infinitely in both directions.

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Mind Expander

To graph the line given by the equation \( y = \frac{1}{4} x - 1 \), start by identifying the y-intercept, which is -1. Plot the point (0, -1) on the graph. The slope \( \frac{1}{4} \) indicates that for every 4 units you move to the right (positive direction on the x-axis), you move up 1 unit (positive direction on the y-axis). From (0, -1), you can go to (4, 0) as your next point. Connect these points with a straight line, and extend it in both directions. For further exploration, consider how changing the slope and y-intercept would alter the graph. For instance, if you were to increase the slope to 2, the steepness of the line would increase significantly, making it rise rapidly. By trying out different slopes and y-intercepts, you can gain a richer understanding of how linear equations behave visually!

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