Math Problem Statement

Graph the line with the equation y, equals, one quarter, x, plus, 7y=41​x+7

Solution

The given equation is y=14x+7y = \frac{1}{4}x + 7.

To graph this line, follow these steps:

  1. Identify the slope (14\frac{1}{4}) and the y-intercept (77).

    • The slope means that for every 4 units you move to the right, the line goes up 1 unit.
    • The y-intercept is the point where the line crosses the y-axis (0,70, 7).
  2. Generate additional points using the slope:

    • From (0,7)(0, 7), move 4 units to the right (x=4x = 4) and 1 unit up (y=8y = 8). This gives the point (4,8)(4, 8).
  3. Plot at least two points and draw a straight line through them.

I will plot the graph for you. matplotlib.pyplot as plt import numpy as np

Define the equation y = (1/4)x + 7

x = np.linspace(-20, 20, 400) # Generate x values y = (1/4) * x + 7 # Calculate corresponding y values

Plot the line

plt.figure(figsize=(8, 6)) plt.plot(x, y, label=r"$y = \frac{1}{4}x + 7$", color='blue')

Highlight specific points

plt.scatter([0, 4], [7, 8], color='red', label="Key Points (0,7) & (4,8)")

Add labels and title

plt.axhline(0, color='black',linewidth=0.5) # x-axis plt.axvline(0, color='black',linewidth=0.5) # y-axis plt.grid(color = 'gray', linestyle = '--', linewidth = 0.5) plt.title("Graph of y = (1/4)x + 7") plt.xlabel("x-axis") plt.ylabel("y-axis") plt.legend()

Show the plot

plt.show()Here is the graph of the line y=14x+7y = \frac{1}{4}x + 7. The red points (0,7)(0, 7) and (4,8)(4, 8) are key points calculated from the slope and intercept.

Would you like further details or calculations?

Here are 5 related questions for practice:

  1. How would the graph change if the slope were 14-\frac{1}{4}?
  2. What happens to the graph if the y-intercept changes to 10?
  3. How would you write the equation if the line passes through (4,6)(-4, 6)?
  4. What is the x-intercept of the current line?
  5. Can you identify two other points on the line without using the slope?

Tip: Always identify the slope and intercept to quickly sketch a line.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Graphing

Formulas

y = mx + b (Slope-Intercept Form)

Theorems

Slope-Intercept Form Theorem

Suitable Grade Level

Grades 8-10