Math Function 3

What is the definition of a function?

• It has inputs and outputs.

• Every input has only ONE output
• Inputs have different outputs every time.

• It consists of x-values and y-values.

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)

Which two functions have a graph that is a line?

• y = 2x²– 9x

• y = –3^x

• y = 2x – 9

Select all of the following equations which define linear functions.

• y = x² – 7

• y = 6 – 5x

• y = 9x

Who has the greater rate of change?

• They have the same rate of change.

What's the initial value of the equation y = 2x + 4

• 4

• -4

• 2

• 2x

What is the rate of change and initial value?

• Rate of Change = 3 Initial Value = 8

• Rate of Change = 8 Initial Value = 3

Tables and Graphs are a way to show information/data in a visual way.

Categorize these into two groups:

Groups:

(a) Tables

,

(b) Graphs

• 
• 
• 
• 
• 
• 

An equation MUST have:

• numbers

• an equal sign

• variables

• math operation

Match the following:

Input - The value that goes ​ (a)   a function/equation/rule.

Output- The value that comes ​ (b)   after the input goes into the function/equation/rule.

• table
• into
• out
• slope