Math Problem Statement

Find a statement that is equivalent to the absolute value equation  StartAbsoluteValue 2 x minus 8 EndAbsoluteValue equals 1. Question content area bottom Part 1 Choose the statement that is equivalent to StartAbsoluteValue 2 x minus 8 EndAbsoluteValue equals 1. 2 x minus 8 less than or equals minus 5 or 2 x minus 8 greater than or equals 1 2 x minus 8 less than or equals minus 5 or 2 x minus 8 greater than or equals 1 negative 1 less than or equals 2 x minus 8 less than or equals 1 negative 1 less than or equals 2 x minus 8 less than or equals 1 2 x minus 8 equals x or 2 x minus 8 equals negative x 2 x minus 8 equals x or 2 x minus 8 equals negative x 2 x minus 8 equals 1 or 2 x minus 8 equals negative 1 2 x minus 8 equals 1 or 2 x minus 8 equals negative 1 left parenthesis negative infinity comma infinity right parenthesis left parenthesis negative infinity comma infinity right parenthesis empty set empty set

Solution

To find a statement that is equivalent to the given absolute value equation 2x8=1|2x - 8| = 1, we can rewrite the absolute value equation without the absolute value by setting up two separate equations based on the definition of absolute value:

Definition of Absolute Value:

A=B    A=B or A=B|A| = B \implies A = B \text{ or } A = -B

Applying this Definition:

Given the equation 2x8=1|2x - 8| = 1, we can rewrite it as:

  1. 2x8=12x - 8 = 1
  2. 2x8=12x - 8 = -1

Solving Each Equation:

  1. For 2x8=12x - 8 = 1: 2x8=12x - 8 = 1 Add 8 to both sides: 2x=92x = 9 Divide by 2: x=92x = \frac{9}{2}

  2. For 2x8=12x - 8 = -1: 2x8=12x - 8 = -1 Add 8 to both sides: 2x=72x = 7 Divide by 2: x=72x = \frac{7}{2}

Equivalent Statement:

The equation 2x8=1|2x - 8| = 1 is equivalent to the statement: 2x8=1 or 2x8=12x - 8 = 1 \text{ or } 2x - 8 = -1

Therefore, the correct choice is:

2x8=12x - 8 = 1 or 2x8=12x - 8 = -1


Would you like more details or have any questions?

Here are some related questions:

  1. How do you solve other types of absolute value equations?
  2. What are the steps to isolate the absolute value before solving?
  3. How can absolute value inequalities be solved differently?
  4. How does graphing absolute value functions help in understanding their equations?
  5. What is the significance of absolute value in real-world problems?

Tip: Always check the validity of your solutions by substituting them back into the original absolute value equation to ensure they satisfy it!

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Math Problem Analysis

Mathematical Concepts

Absolute Value
Linear Equations

Formulas

|A| = B implies A = B or A = -B

Theorems

Absolute Value Theorem

Suitable Grade Level

Grades 7-9