3-1 What is a function?

3-1 What is a function?

Poll

Do you remember anything about functions and/or one person can only get off at 1 bus stop?

• I remember the concept well

• I kinda remember

• I don't remember at all

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

How to tell the difference between function and not a function

• Graphs: Vertical line test--draw a line straight up and down. it's a function if it only touches graph 1 time

• everything else: Look at X, It is a function if X DOES NOT REPEAT

• Mapping diagram: X will have 2 lines

You are ready for the assignment

• go to google classroom

• complete 3-1

• finish test and make sure you have finished the writing assignment embedded in UNIT 2 TEST in canvas module 2/11

Multiple Choice

.

• Function
• Not a Function

Multiple Choice

.

• Function
• Not a Function

Multiple Choice

Does the graph represent a function?

• Yes, because the vertical line test shows there are no repeating input values
• No, because the vertical line test shows there are repeating input values

Multiple Choice

Is this set of ordered pairs a function or not a function? 

• Function
• Not a Function 

Multiple Choice

Is this mapping a function or not a function? 

• Function
• Not a Function

Multiple Choice

Is this mapping a function or not a function? 

• Function
• Not a Function 

Multiple Choice

Is this a function?

• Function
• Not a Function

Multiple Choice

Is this a function?

• Function
• Not a Function

Multiple Choice

Given h(x) = 5 - 9x, find h(8). 

• h(8) = -360
• h(8) = -67