Unit 4A Review

Unit 4A Review

Do Now:

1. Check HW with the answer key on the Daily Agenda/HW Board

2. Have a whiteboard, marker, and eraser ready to go!

The Coordinate Plane!

• Plotting points

• Determining locations (quadrants)

Multiple Choice

Where is point E located?

• ( 2, 0 )

• ( 2 , 2 )

• ( 0 , 2 )

• ( 0 , 0 )

Multiple Choice

In which quadrant is the following point?

(-3, -12)

• Quadrant I

• Quadrant II

• Quadrant III

• Quadrant IV

Multiple Choice

Ordered pair (0,0) is also known as the ___.

• y-axis
• x-axis
• origin

Defining Functions

• Is it a function?

Multiple Choice

What is the definition of function?

• Has inputs and outputs
• Every input has only ONE output
• Inputs have different outputs every time
• x-values and y-values

Multiple Choice

Which of the following is a function?

Comparing Functions!

- Linear v. Nonlinear

- Discrete v. Continuous

- Where is the graph increasing, decreasing, neither?

Multiple Choice

Is the graph pictured a linear or nonlinear function?

• Linear
• Nonlinear

Multiple Choice

Is this function linear or nonlinear?

• Linear
• Nonlinear

Multiple Choice

Is the table linear or nonlinear?

• Linear
• Nonlinear

Multiple Choice

Discrete or continuous data?

• Discrete

• Continuous

Multiple Choice

Discrete or continuous data?

• Discrete

• Continuous

Multiple Choice

While driving to Florida, Sophia averaged 72 m.p.h. 

• Discrete
• Continuous

Multiple Choice

The number of school lunches sold during the month. 

• Discrete
• Continuous

Domain and Range

• Determine the domain and range of...

• Continuous functions

• Rays

• Line segments

• Discrete functions

Multiple Choice

For the function {(0,1), (1,-3), (2,-4), (-4,1)}, write the domain and range.

• D: {1, -3, -4,}
  R: {0, 1, 2, -4}
• D:{-4, 0, 1, 2}
  R:{-4, -3, 1}
• D:{0, 1, 2, 3, 4}
  R:{1, -3, -4}

Multiple Choice

What is the DOMAIN of this graph? 
Remember:  DOMAIN is the x from left to right. 

• x < -3
• x ≤ -3
• x > -3
• x ≥ -3

Multiple Choice

What is the range of the graph?
Remember: Range is y! 

• 1 ≤ x ≤ 5
• 1 < x < 5
• 1 ≤ y ≤ 5
• 1 < y < 5

Multiple Choice

What is the domain of the graph shown?

• {-2, -1, 0, 1, 2, 3, 4}

• {2, 3, 4}

• 2 ≤ y ≤ 4

• -2 ≤ x ≤ 4

Multiple Choice

What is the range of this graph?

• All Real Numbers

• -2 < x < 2

• -1 < y <1

• -2 < y < 2

Function Notation

• Evaluate functions

• Write equations in function notation

Multiple Choice

g(x) = 3x + 1
g(2) = _______

• 6
• 7
• 8
• 9

Multiple Choice

Given f(x) =
2x² + 5x - 17, find f(-1). 

• f(-1) = -20
• f(-1) = -24

Writing Rules for Functions

• The function machine!

• Write an equation in function notation that demonstrates how the input turns into the output.

Multiple Choice

Write an equation to show a relationship between the input and the output

• b(a) = 9a

• b(a) = a/8

• b(a) = a/9

• a(b) = 8/b

Multiple Choice

Determine which rule best represents the expression the function machine used

• ^{f(z) = z + 7}

• f(z) = 7z

• f(z) = 8z + 7

• f(z) = 6z + 7

Go to Google Classroom

Answer the question on Google Classroom