Math Problem Statement

find the equation of this line

Find the equation of this line.

Solution

To find the equation of the line, we need to determine two things:

  1. Slope (m): The slope of the line is the ratio of the vertical change (rise) to the horizontal change (run). From the graph, we can observe two points on the line, for instance:

    • Point 1: (-6, 2)
    • Point 2: (0, 0)

    Using these points, we calculate the slope mm as follows: m=y2y1x2x1=020(6)=26=13m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{0 - 2}{0 - (-6)} = \frac{-2}{6} = -\frac{1}{3}

  2. y-intercept (b): The y-intercept is where the line crosses the y-axis. In this case, the line crosses the y-axis at (0, 0), so the y-intercept bb is 0.

Thus, the equation of the line is: y=13x+0y = -\frac{1}{3}x + 0 or simply: y=13xy = -\frac{1}{3}x

Would you like more details on this process or have any questions?

Here are 5 related questions to explore further:

  1. How do you find the equation of a line given two points?
  2. What does the slope of a line represent in practical terms?
  3. How can you identify the y-intercept from a graph?
  4. How does the sign of the slope affect the direction of the line?
  5. Can you determine the equation of a line parallel to this one?

Tip: When the y-intercept is zero, the line passes through the origin, simplifying the equation!

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Graphing

Formulas

Slope formula: m = (y2 - y1) / (x2 - x1)
Slope-intercept form: y = mx + b

Theorems

Slope-Intercept Theorem

Suitable Grade Level

Grades 8-10