Math Problem Statement

Working and answers

Solve the following inequalities and present your answers in a graph. a) 3x - y < 8x + 2 b) 2g + 2m ≥ 7g - 10

Solution

Let's break down and solve each inequality from your uploaded image.


a) 3xy<8x+23x - y < 8x + 2

To solve for yy, we can isolate it:

  1. Move yy to one side: 3x8x<y+23x - 8x < y + 2 This simplifies to: 5x<y+2-5x < y + 2

  2. Subtract 2 from both sides: 5x2<y-5x - 2 < y

Thus, the inequality becomes: y>5x2y > -5x - 2

Now, we can graph this inequality. The line y=5x2y = -5x - 2 is a straight line, and the region above this line (because the inequality is y>5x2y > -5x - 2) will be the solution.


b) 2g+2m7g102g + 2m \geq 7g - 10

To solve for mm, follow these steps:

  1. Move all terms involving gg to one side: 2m7g102g2m \geq 7g - 10 - 2g Simplify: 2m5g102m \geq 5g - 10

  2. Now, divide both sides by 2 to isolate mm: m5g102m \geq \frac{5g - 10}{2} Simplify further: m52g5m \geq \frac{5}{2}g - 5

This inequality represents the region above and including the line m=52g5m = \frac{5}{2}g - 5.


Graphing:

For both inequalities, we graph the respective lines (in the case of a linear inequality) and shade the appropriate region.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Inequalities
Graphing Inequalities

Formulas

Standard form of linear equation: Ax + By = C
Slope-intercept form: y = mx + b

Theorems

Properties of inequalities
Graphing inequalities in two variables

Suitable Grade Level

Grades 8-10