Math Problem Statement

Solve, graph, and write the answer in interval notation: -5 < 2x - 3 ≤ 4.

Solution

The inequality presented in the image is:

5<2x34-5 < 2x - 3 \leq 4

Let's solve it step-by-step:

Step 1: Isolate 2x2x

Start by adding 3 to all parts of the inequality:

5+3<2x3+34+3-5 + 3 < 2x - 3 + 3 \leq 4 + 3

Simplifying this:

2<2x7-2 < 2x \leq 7

Step 2: Solve for xx

Now, divide the entire inequality by 2 to isolate xx:

22<2x272\frac{-2}{2} < \frac{2x}{2} \leq \frac{7}{2}

Simplifying:

1<x72-1 < x \leq \frac{7}{2}

So the solution is:

1<x72-1 < x \leq \frac{7}{2}

Interval Notation:

In interval notation, the solution is:

(1,72](-1, \frac{7}{2}]

This means xx is greater than 1-1 but less than or equal to 72\frac{7}{2}.

Graph:

  • The number line would show an open circle at x=1x = -1 (since xx does not include 1-1) and a closed circle at x=72x = \frac{7}{2} (since xx can equal 72\frac{7}{2}).
  • The region between these two points would be shaded to represent the values of xx.

Would you like a graph to be generated for this inequality?

Let me know if you want further clarifications or more details. Here are five related questions to explore:

  1. How do we graph a compound inequality?
  2. What is the difference between open and closed intervals on a number line?
  3. Can you explain how interval notation works in inequalities?
  4. What are the steps to solve compound inequalities like this one?
  5. How does solving this inequality differ from solving an equation?

Tip:

Always ensure to perform operations on all parts of a compound inequality to maintain the relationship between the terms.

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Math Problem Analysis

Mathematical Concepts

Inequalities
Linear Equations

Formulas

Basic inequality operations
Interval notation

Theorems

Properties of Inequalities

Suitable Grade Level

Grades 8-10