Math Problem Statement

Which graph represents the solution set of this inequality: -2x + 7 < 23?

Solution

To solve the inequality and identify the correct graph, let's analyze the inequality step-by-step:

Given Inequality:

2x+7<23-2x + 7 < 23

Step 1: Isolate xx

  1. Subtract 7 from both sides: 2x<16-2x < 16
  2. Divide by -2 (and remember to reverse the inequality since we are dividing by a negative number): x>8x > -8

Solution Set

The solution to the inequality is: x>8x > -8

Interpreting the Graph

  • We are looking for a graph that represents x>8x > -8, which should be an open circle at -8 (indicating that -8 is not included) and a line extending to the right (since xx is greater than -8).

Choosing the Correct Option

  • Option B represents the correct solution. It shows an open circle at -8 and an arrow extending to the right.

Answer:

The correct answer is B.

Would you like further details or have any questions?


Here are five related questions to deepen understanding:

  1. How do you handle inequalities when multiplying or dividing by a negative number?
  2. What would the graph look like if the inequality was x8x \geq -8?
  3. How would the solution change if the inequality was 2x+723-2x + 7 \leq 23?
  4. What if the inequality was 2x+7<232x + 7 < 23 instead?
  5. How can inequalities be represented on a number line when using intervals?

Tip: Remember, whenever dividing or multiplying by a negative in inequalities, flip the inequality sign!

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Algebra
Inequalities

Formulas

-2x + 7 < 23
Subtract 7 from both sides: -2x < 16
Divide by -2 and reverse inequality: x > -8

Theorems

Reversing the inequality when dividing or multiplying by a negative number

Suitable Grade Level

Grades 7-9