Math Problem Statement

Which Graph represents 2x>y?

Solution

To determine which graph represents the inequality 2x>y2x > y, let's first rewrite it in slope-intercept form for easier visualization.

The given inequality is: 2x>y2x > y

Rewriting it in slope-intercept form (y=mx+by = mx + b): y<2xy < 2x

This tells us that the line y=2xy = 2x is the boundary of the inequality. The inequality symbol << means that we are considering the area below the line.

Key Characteristics of the Graph

  1. Line Equation: The boundary line is y=2xy = 2x. This line has a slope of 2 and passes through the origin (0, 0).
  2. Dashed Line: The boundary line should be dashed because the inequality is strict (<<), meaning points on the line itself are not included in the solution.
  3. Shading: The region below the dashed line y=2xy = 2x should be shaded, indicating the solution set.

Conclusion

The correct graph would feature:

  • A dashed line representing y=2xy = 2x.
  • The shaded region below this line.

Would you like more details on how to plot the graph or have any questions?

Here are some related questions:

  1. How do you graph inequalities with more than one condition (e.g., y>2xy > 2x and y<x+3y < x + 3)?
  2. What changes if the inequality symbol is \geq or \leq?
  3. How do you determine if a point is a solution to an inequality graphically?
  4. What are the steps to convert inequalities into slope-intercept form?
  5. How do inequalities affect the shape of linear regions on a coordinate plane?

Tip: When dealing with inequalities, always pay attention to whether the boundary line is dashed or solid; this indicates if the line itself is included in the solution.

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Math Problem Analysis

Mathematical Concepts

Linear Inequalities
Graphing Inequalities
Slope-Intercept Form

Formulas

y = mx + b (Slope-Intercept Form)

Theorems

Inequality Graphing Rules
Boundary Line and Shading Theorem

Suitable Grade Level

Grades 9-10