Unit 2A Review

Unit 2A Review

Try the activating question on the right of the screen

There’s More Than One Way to Solve

Types of Solutions

• One Solution (ex. x = 2)

• No Solution (ex. 5 = 2)

• Infinitely Many Solutions (ex. 2 = 2)

Multiple Choice

How many solutions does this equation have:

4x + 1 - 3x = 3

• One Solution

• No Solution

• Infinitely Many Solutions

Multiple Choice

How many solutions does this equation have:

2(x + 2) = 2x - 8

• One Solution

• No Solution

• Infinitely Many Solutions

Multiple Choice

How many solutions does this equation have:

4 + 2x = 4 - x + 3x

• One Solution

• No Solution

• Infinitely Many Solutions

Literal Equations

• Equations with multiple letters (variables)

• Answers will have variables

• Ex: Solve ab = cde for d

• Ex: Solve 4x + 2y = 16  for y

Solving Inequalities

• Solve using the same steps as equations

• EXCEPT: Flip the < or > sign when dividing or multiplying by a negative integer ON BOTH SIDES.

• Ex: 3 < -5n + 2n

Graphing Inequalities

• >< = empty circle

• ≥≤ = filled in circle

• >≥ = shade right

• <≤ = shade left

Multiple Select

Describe the graph of x < -5

• Empty Circle

• Filled Circle

• Shaded Left

• Shaded Right

Multiple Choice

Which graph represents 0 < x < 4?

Turn Sentences Into Equations

Example:

The sum of three and the product of five and a number is 12.  What is the number?

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