Math Problem Statement

Graph the linear inequality y > 2x - 4.

Solution

To graph the linear inequality y>2x4y > 2x - 4, follow these steps:

  1. Graph the Boundary Line:

    • Rewrite the inequality as an equation: y=2x4y = 2x - 4.
    • This line has a slope of 2 and a y-intercept of -4. Plot the point (0, -4) on the y-axis.
    • Use the slope to plot another point: since the slope is 2, go up 2 units and right 1 unit from (0, -4) to get a second point.
    • Draw a dashed line through these points because the inequality is strictly greater than (>) and does not include equality (not y2x4y \geq 2x - 4).
  2. Shade the Appropriate Region:

    • Since the inequality is y>2x4y > 2x - 4, shade the region above the line, where yy-values are greater than those on the line.

The dashed line indicates points that are not included in the solution, and the shaded area above the line represents all points (x,y)(x, y) that satisfy y>2x4y > 2x - 4.

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

Here are some related questions that might interest you:

  1. How do you graph inequalities that involve \leq or \geq?
  2. What changes if the inequality is y<2x4y < 2x - 4?
  3. How can you find points that satisfy the inequality directly?
  4. What if the inequality involves a different slope or intercept?
  5. How would you check if a particular point satisfies y>2x4y > 2x - 4?

Tip: Always use a dashed line for ">" or "<" inequalities and a solid line for "≥" or "≤" inequalities.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Inequalities
Graphing Inequalities

Formulas

Slope-intercept form of a line: y = mx + b

Theorems

Properties of linear inequalities

Suitable Grade Level

Grades 7-10