# 4-3 Solving Absolute value equations - PowerPoint PPT Presentation

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4-3 Solving Absolute value equations. Miss battaglia – algebra 1 CP Objective: Solve equations that involve absolute value; use absolute value equations to model real-world problems. Warm up. Solve . Work with a partner. The actual results could vary from the poll results by -3% to 3%.

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4-3 Solving Absolute value equations

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## 4-3 Solving Absolute value equations

Miss battaglia – algebra 1 CP

Objective: Solve equations that involve absolute value; use absolute value equations to model real-world problems.

• Solve

### Work with a partner

The actual results could vary from the poll results by -3% to 3%.

What is the greatest percent of voters who might vote for Blake?

What is the least percent of voters who might vote for Cortez?

According to the poll, can Cortez get a majority of the votes?

### example

• Use a number line to solve |m| = 2.5

### Use a number line to solve

• | b | = 2b) 4 = | y |

• c) | x | = 5d) x = | 5 |

### Critical thinking…

• Is there a solution for | x | = - 3? Explain.

### solve

• | x | + 5 = 11

GOAL:

Get absolute value by itself on one side of equation.

### solve

• | x | + 11 = 5

GOAL:

Get absolute value by itself on one side of equation.

### solve

• 3 = |w| - 4

GOAL:

Get absolute value by itself on one side of equation.

### solve

GOAL:

Get absolute value by itself on one side of equation.

The equation | p – 9 | = 3 represents the max and min % of people who are undecided. Solve the equation.

### Solve & Check

• | c – 2 | = 6

### Solve & Check

• | x + 8 | = 5

### homework

• Pg172-173 #5–7, 11, 16, 22, 23, 29

• STUDY FOR QUIZ TOMORROW!