Math Problem Statement

Solve each absolute value equation and graph the solution set.

Solution

The image contains multiple absolute value equations to solve and then graph their solution sets. I'll help solve these step by step and explain how to interpret and graph the solutions.

1. |y| = 3

  • Solution: The absolute value of yy equals 3, so y=3y = 3 or y=3y = -3.
  • Graph: Place points at y=3y = 3 and y=3y = -3 on the number line.

2. |x - 4| = 4

  • Solution: Break this down into two cases:
    • x4=4x - 4 = 4 gives x=8x = 8.
    • x4=4x - 4 = -4 gives x=0x = 0.
  • Graph: Place points at x=8x = 8 and x=0x = 0 on the number line.

3. |y + 3| = 2

  • Solution: Two cases:
    • y+3=2y + 3 = 2 gives y=1y = -1.
    • y+3=2y + 3 = -2 gives y=5y = -5.
  • Graph: Place points at y=1y = -1 and y=5y = -5 on the number line.

4. |2x + 1| = 5

  • Solution:
    • 2x+1=52x + 1 = 5 gives 2x=42x = 4, so x=2x = 2.
    • 2x+1=52x + 1 = -5 gives 2x=62x = -6, so x=3x = -3.
  • Graph: Place points at x=2x = 2 and x=3x = -3 on the number line.

5. |3y - 2| = 1

  • Solution:
    • 3y2=13y - 2 = 1 gives 3y=33y = 3, so y=1y = 1.
    • 3y2=13y - 2 = -1 gives 3y=13y = 1, so y=13y = \frac{1}{3}.
  • Graph: Place points at y=1y = 1 and y=13y = \frac{1}{3} on the number line.

6. |x + 2| = 4

  • Solution:
    • x+2=4x + 2 = 4 gives x=2x = 2.
    • x+2=4x + 2 = -4 gives x=6x = -6.
  • Graph: Place points at x=2x = 2 and x=6x = -6 on the number line.

7. |x| = 0

  • Solution: x=0x = 0.
  • Graph: Place a point at x=0x = 0 on the number line.

8. |y + 0.2| = 0.8

  • Solution:
    • y+0.2=0.8y + 0.2 = 0.8 gives y=0.6y = 0.6.
    • y+0.2=0.8y + 0.2 = -0.8 gives y=1y = -1.
  • Graph: Place points at y=0.6y = 0.6 and y=1y = -1 on the number line.

9. |d - 100| = 60

  • Solution:
    • d100=60d - 100 = 60 gives d=160d = 160.
    • d100=60d - 100 = -60 gives d=40d = 40.
  • Graph: Place points at d=160d = 160 and d=40d = 40 on the number line.

10. |11 - y| = 11

  • Solution:
    • 11y=1111 - y = 11 gives y=0y = 0.
    • 11y=1111 - y = -11 gives y=22y = 22.
  • Graph: Place points at y=0y = 0 and y=22y = 22 on the number line.

11. |y| = 11

  • Solution: y=11y = 11 or y=11y = -11.
  • Graph: Place points at y=11y = 11 and y=11y = -11 on the number line.

12. |2x + 4| = 6

  • Solution:
    • 2x+4=62x + 4 = 6 gives 2x=22x = 2, so x=1x = 1.
    • 2x+4=62x + 4 = -6 gives 2x=102x = -10, so x=5x = -5.
  • Graph: Place points at x=1x = 1 and x=5x = -5 on the number line.

Would you like a more detailed explanation for any of these solutions?

Here are five related questions for further exploration:

  1. What happens when the absolute value is equal to zero?
  2. How do you graph inequalities involving absolute values?
  3. Can you solve an absolute value equation with a variable on both sides?
  4. How does the solution change when you have nested absolute values?
  5. What is the geometric interpretation of absolute value on the number line?

Tip: When solving absolute value equations, always break the problem into two cases—positive and negative—and solve both separately!

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Math Problem Analysis

Mathematical Concepts

Algebra
Absolute Value Equations
Number Line

Formulas

|x| = a → x = a or x = -a
|x - b| = c → x - b = c or x - b = -c

Theorems

Absolute Value Theorem

Suitable Grade Level

Grades 6-8