Math Problem Statement

Graph the line with the equation y = -1/5x + 4.

Solution

Let's graph the given equation y=15x+4y = -\frac{1}{5}x + 4 using the information from the image.

The equation is in the slope-intercept form y=mx+by = mx + b, where:

  • m=15m = -\frac{1}{5} is the slope, indicating the line decreases by 1 unit vertically for every 5 units it moves horizontally.
  • b=4b = 4 is the y-intercept, meaning the line crosses the y-axis at y=4y = 4.

Steps to graph:

  1. Start at the y-intercept: Plot the point (0, 4) on the graph.
  2. Use the slope: From (0, 4), the slope 15-\frac{1}{5} tells us to move down 1 unit and right 5 units. Plot the point at (5, 3).
  3. Extend the line: Continue plotting points along the line by using the slope, or draw a straight line through the two points you plotted.

Let me know if you'd like me to graph this step-by-step for you or if you'd like further explanations!

Here are 5 follow-up questions:

  1. What does the slope represent in this equation?
  2. How would the graph change if the slope were positive?
  3. Where does the line cross the x-axis?
  4. How would the graph look if the y-intercept were negative?
  5. What happens to the line if you change the slope to zero?

Tip: Always plot the y-intercept first when graphing lines in slope-intercept form!

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Slope-Intercept Form

Formulas

y = mx + b (Slope-Intercept Form)

Theorems

Slope-Intercept Theorem

Suitable Grade Level

Grades 8-10