Math Problem Statement

2x + 3y > -5

Solution

To solve the inequality 2x+3y>52x + 3y > -5, we can represent it graphically or analyze it algebraically.

Step-by-step process:

  1. Rewrite the inequality to express it as an equation first: 2x+3y=52x + 3y = -5 This is the boundary line for the inequality, which we'll use to determine the solution region.

  2. Find the intercepts:

    • When x=0x = 0, solve for yy: 3y=5y=533y = -5 \quad \Rightarrow \quad y = -\frac{5}{3}
    • When y=0y = 0, solve for xx: 2x=5x=522x = -5 \quad \Rightarrow \quad x = -\frac{5}{2}
  3. Graph the boundary line:

    • Plot the intercepts at (0,53)(0, -\frac{5}{3}) and (52,0)(- \frac{5}{2}, 0).
    • Draw the line. This line represents the equation 2x+3y=52x + 3y = -5.
    • Since the original inequality is strict (using >>), the line should be dashed, indicating that the points on the line are not included in the solution.
  4. Determine the region:

    • Select a test point (such as the origin, (0,0)(0, 0)).
    • Substitute (0,0)(0, 0) into the inequality: 2(0)+3(0)>50>52(0) + 3(0) > -5 \quad \Rightarrow \quad 0 > -5
    • This is true, so the region containing the origin is the solution set for the inequality.

Final Answer:

The solution to 2x+3y>52x + 3y > -5 is the region above the dashed line 2x+3y=52x + 3y = -5.

Would you like a more detailed graphical explanation?


Here are 5 related questions to explore further:

  1. How do you solve inequalities with absolute values?
  2. What happens when an inequality involves quadratic terms?
  3. How do systems of inequalities get solved graphically?
  4. How does reversing an inequality change its solution set?
  5. What are the methods to solve inequalities involving logarithms?

Tip: Always remember to reverse the inequality symbol when multiplying or dividing by a negative number!

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Inequalities
Graphing Inequalities

Formulas

Linear equation: 2x + 3y = -5

Theorems

Graphical solution of linear inequalities

Suitable Grade Level

Grades 9-11