Functions Review

Functions Review

I can review what functions are :).

What is a function?

A function is a function if and only if there is one input for every output.

Function Graph

A function graph shows the relationship between inputs and outputs

Function Table

A table is a function if and only is the inputs in the table do not repeat. 

x- coordinate is the input
y-coordinate is the output

Multiple Choice

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

Multiple Choice

• Function
• Not a Function

Multiple Choice

• Function
• Not a Function

Multiple Choice

• Function
• Not a Function

Multiple Choice

• Function
• Not 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

• Function
• Not a Function

Multiple Choice

Determine whether the relation shown here is a function. Explain your answer.

• function, an input has 1 output

• function, an input has 2 different outputs

• function, no output has 2 different inputs

• not a function, an input has 2 different outputs

Multiple Choice

Which table does NOT represent a function?

Vertical Line Test

The vertical line test is to show if a vertical line passes through a graph only once to determine if it is a function or not

Not A Function

This is NOT a function because it passes through the graph more than once.

A Function

This is a function because it only passes through the graph once

Multiple Choice

Which graph represents a function?

Multiple Choice

Is y a function of x?

• function

• not a function

Multiple Choice

Is y a function of x?

• function

• not a function

Multiple Choice

Is y a function of x?

• function

• not a function

Multiple Choice

Is y a function of x?

• function

• not a function

Multiple Choice

Is y a function of x?

• function

• not a function

Multiple Choice

Is y a function of x?

• function

• not a function

Linear Function

Linear functions are graphs with straight lines when their points show a pattern of a line.

Non-Linear Function

A non-linear function is a graph that follows any pattern except a line.

Multiple Choice

• Linear

• Non Linear

Multiple Choice

• Linear

• Non Linear

Multiple Choice

Which graph(s) show nonlinear functions?

• Graph I, only
• Graph II, only
• Graph I and Graph II, only.
• Graph I, Graph II, and Graph III

Multiple Choice

Which graph is linear?

• Graph A

• Graph B

• Graph C

• Graph D

Multiple Choice

Is the graph pictured a linear or nonlinear function?

• Linear

• Nonlinear

Multiple Choice

• Linear

• Non Linear

Multiple Choice

• Linear

• Non Linear

Multiple Choice

• Linear

• Non Linear

Multiple Choice

• Linear

• Non Linear

Poll

This lesson helped me to catch up to what I was missing when I did not sign in to class online.

• Not at all

• Somewhat

• I think I am all caught up!