Math Problem Statement

Use the​ slope-intercept form to graph the equation y equals negative three sevenths x minus 2.

Solution

The slope-intercept form of a linear equation is written as:

y=mx+by = mx + b

Where:

  • mm is the slope of the line.
  • bb is the y-intercept, the point where the line crosses the y-axis.

In your equation y=37x2y = -\frac{3}{7}x - 2:

  • The slope m=37m = -\frac{3}{7}.
  • The y-intercept b=2b = -2, meaning the line crosses the y-axis at (0,2)(0, -2).

Steps to graph the equation:

  1. Plot the y-intercept: Start by plotting the point (0,2)(0, -2) on the graph.
  2. Use the slope: The slope 37-\frac{3}{7} means that for every 7 units you move to the right (positive x direction), you move 3 units down (since the slope is negative).
    • From the point (0,2)(0, -2), move 7 units to the right to (7,2)(7, -2), then move 3 units down to (7,5)(7, -5). Plot this point (7,5)(7, -5).
  3. Draw the line: Connect the two points (0,2)(0, -2) and (7,5)(7, -5) with a straight line.

The graph of the equation will be a straight line passing through these two points, with a downward slope.

Would you like me to provide an image of this graph? Or would you like any further details?

Relative Questions:

  1. What does the slope of a line represent?
  2. How do you determine the direction of the slope from its sign?
  3. How would you graph an equation with a positive slope?
  4. How can you convert an equation into slope-intercept form if it's not already in that format?
  5. How does changing the y-intercept affect the graph?

Tip: When graphing, always start by plotting the y-intercept, and use the slope to find additional points.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Graphing

Formulas

Slope-intercept form: y = mx + b

Theorems

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Suitable Grade Level

Grades 7-9