Functions

Function or not a function

• function

• not a function

Which set of ordered pairs 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)}

Function or not a function

• function

• not a function

The graph of a function must passed the ____________ line test.

Function or not a function

• function

• not a function

Is this a function

• Function
• Not a Function

Which of the following is NOT a function?

• 
• 
• 
• 

Is this a function?

• Function
• Not a Function

If f(x) = 2x + 1, find f(1).

• f(1) = 1

• f(1) = 4

• f(1) = 0

• f(1) = 3

If I know that f(2) = 4, what is another way I can write my answer?

• 2,4

• (2, 4)

• That is the only way to write it.