Math Problem Statement

Solve each system of inequalities by graphing. y - x < 3, y - x ≥ 2

Solution

To solve the system of inequalities by graphing, we'll graph each inequality and find the region where the solutions overlap. Here are the steps:

Inequality 1: yx<3y - x < 3

  1. Rewrite the inequality in slope-intercept form (i.e., y=mx+by = mx + b): y<x+3y < x + 3
  2. Graph the boundary line y=x+3y = x + 3. This line will have a slope of 1 and a y-intercept of 3.
  3. Determine the region to shade: Since the inequality is y<x+3y < x + 3, shade the region below the line.

Inequality 2: yx2y - x \geq 2

  1. Rewrite the inequality in slope-intercept form: yx+2y \geq x + 2
  2. Graph the boundary line y=x+2y = x + 2. This line will also have a slope of 1 and a y-intercept of 2.
  3. Determine the region to shade: Since the inequality is yx+2y \geq x + 2, shade the region above the line.

Graphing and Finding the Solution

  1. Graph both boundary lines:
    • y=x+3y = x + 3 (dashed line, because the inequality is strict)
    • y=x+2y = x + 2 (solid line, because the inequality is inclusive)
  2. Shade the appropriate regions:
    • Below the line y=x+3y = x + 3
    • Above the line y=x+2y = x + 2
  3. Identify the overlapping region: The solution set is the region where the shaded areas overlap.

Solution

The solution is the region between the lines y=x+2y = x + 2 and y=x+3y = x + 3, where:

  • y>x+2y > x + 2 (below the dashed line)
  • yx+3y \leq x + 3 (above the solid line)

This region forms a strip parallel to the lines, above y=x+2y = x + 2 and below y=x+3y = x + 3.

Would you like me to graph this for you or provide further details?


Here are 5 related questions:

  1. How do you solve systems of linear inequalities with more than two inequalities?
  2. What is the difference between a strict inequality and an inclusive inequality?
  3. How does the slope of a line affect the solution of a system of inequalities?
  4. What happens when the inequalities in a system have no overlapping region?
  5. Can you explain how to find the vertices of the solution region for a system of linear inequalities?

Tip: When graphing inequalities, always pay attention to whether the boundary line should be dashed or solid—this indicates whether the line itself is part of the solution set.

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Math Problem Analysis

Mathematical Concepts

Linear inequalities
Graphing inequalities
Slope-intercept form

Formulas

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Theorems

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Suitable Grade Level

Grades 9-12