Absolute Value Equations

• -2

• 2

• 4

• -3

Tags

CCSS.HSA.REI.B.3

CCSS.HSA.REI.A.1

What is the FIRST step to solving the equation:

|x + 1| = 4

• Set up 2 equations

  x + 1 = 4

  x + 1 = -4

• Subtract 1 on both sides

• Set up 2 equations:

  x + 1 = 4

  x - 1 = 4

• Add 1 to both sides

Tags

CCSS.HSA.REI.B.3

CCSS.HSA.REI.A.1

Tags

CCSS.HSA.REI.B.3

Tags

CCSS.HSA.REI.B.3

CCSS.HSA.REI.A.1

CCSS.HSA.REI.A.2

What is the definition of absolute value?

• The distance a number is to zero

• A positive number

• A number that has a value with a different sign

Evaluate: |-12|

• 12

• -12

• 0

• 1.2

Tags

CCSS.6.NS.C.7

Solve for x
l 5x l = 40

• x = 8 and x =-8
• x = 35 and x = -35
• Only x = 8
• No Solution

Tags

CCSS.HSA.REI.B.3

CCSS.HSA.REI.A.2

Evaluate each expression.
| x + 9 | = -5

• -14
• -4
• {-14, -4}
• no solution

Tags

CCSS.HSA.REI.B.3

CCSS.HSA.REI.A.1

CCSS.HSA.REI.A.2

−2|−2r − 4| = -12

• {3,1}

• {-5,1}

• {-3}

• No Solution

Tags

CCSS.HSA.REI.B.3

CCSS.HSA.REI.A.1