Math Problem Statement

answer

Write the equation of the line in slope-intercept form, using the graph provided.

Solution

To find the equation of the line in slope-intercept form y=mx+by = mx + b, we need two key pieces of information:

  1. The slope (m): The slope is the ratio of the vertical change (rise) to the horizontal change (run) between two points on the line.
  2. The y-intercept (b): This is the point where the line crosses the y-axis.

Step 1: Determine the slope (m)

From the graph, let's choose two points on the line:

  • The line passes through (6,6)(-6, 6) and (0,2)(0, 2).

Using the slope formula: m=change in ychange in x=y2y1x2x1m = \frac{\text{change in y}}{\text{change in x}} = \frac{y_2 - y_1}{x_2 - x_1} Substituting the values from the points (6,6)(-6, 6) and (0,2)(0, 2): m=260(6)=46=23m = \frac{2 - 6}{0 - (-6)} = \frac{-4}{6} = -\frac{2}{3} So, the slope m=23m = -\frac{2}{3}.

Step 2: Determine the y-intercept (b)

The y-intercept is the point where the line crosses the y-axis, which from the graph is at (0,2)(0, 2). Therefore, b=2b = 2.

Final Equation:

The equation of the line in slope-intercept form is: y=23x+2y = -\frac{2}{3}x + 2

Would you like more details or have any questions?


Here are 5 related questions to extend your learning:

  1. What is the general form of a linear equation, and how is it related to the slope-intercept form?
  2. How can you find the slope if only the graph of the line is given?
  3. How do changes in the slope affect the steepness of a line on a graph?
  4. How can you convert the slope-intercept form to standard form Ax+By=CAx + By = C?
  5. What is the significance of the y-intercept in real-world scenarios?

Tip: Always check two points on the line carefully to ensure an accurate calculation of the slope.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Linear Equations
Coordinate Geometry
Slope-Intercept Form

Formulas

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

Theorems

-

Suitable Grade Level

Grades 7-9