Math Problem Statement

Graph this line: y - 5 = -1/3(x + 6)

Solution

Let's solve this step by step to help you graph the line described by the equation:

Equation:
y5=13(x+6)y - 5 = -\frac{1}{3}(x + 6)

Step 1: Rewrite the equation in slope-intercept form (y=mx+by = mx + b).

We start by simplifying the equation.

  1. Distribute 13-\frac{1}{3} to x+6x + 6: y5=13x2y - 5 = -\frac{1}{3}x - 2

  2. Add 5 to both sides to isolate yy: y=13x+3y = -\frac{1}{3}x + 3

Step 2: Identify the slope (mm) and y-intercept (bb).

  • The slope (mm) is 13-\frac{1}{3}. This means the line decreases by 1 unit vertically for every 3 units it moves horizontally.
  • The y-intercept (bb) is 3. This means the line crosses the y-axis at the point (0,3)(0, 3).

Step 3: Plot key points.

  1. Start with the y-intercept: Plot the point (0,3)(0, 3).
  2. Use the slope to find another point:
    Starting at (0,3)(0, 3), use the slope 13-\frac{1}{3}:
    • Move down 1 unit (negative slope) and right 3 units to find the point (3,2)(3, 2).
  3. Another point: From (3,2)(3, 2), repeat the slope:
    • Move down 1 unit and right 3 units to find the point (6,1)(6, 1).

Step 4: Graph the line.

  1. Plot the points (0,3)(0, 3), (3,2)(3, 2), and (6,1)(6, 1) on the graph.
  2. Draw a straight line through these points.

Would you like me to verify further steps, or provide more explanation about graphing lines?


Related Questions:

  1. How do you find the slope and y-intercept from a linear equation?
  2. What are alternative methods to graph linear equations without converting to slope-intercept form?
  3. How can you verify that a point lies on a given line?
  4. What does a positive vs. negative slope look like on a graph?
  5. How would you graph a vertical or horizontal line?

Tip: Always double-check your calculations for slope and y-intercept to avoid errors when plotting points.

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Math Problem Analysis

Mathematical Concepts

Linear Equations
Slope-Intercept Form
Graphing Lines

Formulas

Slope-Intercept Form: y = mx + b
Point-Slope Form: y - y1 = m(x - x1)

Theorems

Slope of a Line
Graphing Linear Equations

Suitable Grade Level

Grades 8-10