Determining Function or Not a Function

Is this table of values a function or not a function?

• Function

• Not a Function

Answer explanation

Think about a vending machine: inputs are "buttons", outputs are what the vending machine gives you - are your outputs consistent for an input/"button"?

Tags

CCSS.8.F.A.1

Is this graph a function or not a function?

• Function

• Not a Function

Answer explanation

*Vertical line test* & Think about a vending machine: inputs (x-values) are "buttons", outputs (y-values) are what the vending machine gives you - are your outputs consistent for an input/"button"?

Does this map represent a function or not a function?

• Function

• Not a Function

Answer explanation

Think about a vending machine: inputs (left-side group) are "buttons", outputs (right-side group) are what the vending machine gives you; the arrows show what a button "maps" to - are your outputs consistent for an input/"button"?

Tags

CCSS.8.F.A.1

Does this map represent a function or not a function?

• Function

• Not a Function

Answer explanation

Think about a vending machine: inputs (left-side group) are "buttons", outputs (right-side group) are what the vending machine gives you; the arrows show what a button "maps" to - are your outputs consistent for an input/"button"?

Tags

CCSS.8.F.A.1

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

• Function

• Not a Function

Answer explanation

(x,y) coordinate pairs: (input, output) -> (button, what the vending machine gives back)

Are your outputs consistent for each button?

Tags

CCSS.8.F.A.1

What is the most accurate definition of function?

• Has inputs and outputs

• Every input has only ONE output

• Inputs have different outputs every time

• x-values and y-values

Answer explanation

Think about a vending machine: inputs are "buttons", outputs are what the vending machine gives you

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Is this graph a function or not a function?

• Function

• Not a Function

Answer explanation

*Vertical line test* & Think about a vending machine: inputs (x-values) are "buttons", outputs (y-values) are what the vending machine gives you - are your outputs consistent for an input/"button"?

Tags

CCSS.8.F.A.1

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.

• Yes, because each x-value has only one y-value paired with it.

• No, because the x-value 11 has two y-values pair with it.

• No, because each x-value has only one y-value paired with it.

Tags

CCSS.8.F.A.1

Is this table a function or not a function? 

• Function

• Not a Function

Tags

CCSS.8.F.A.1

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)

Tags

CCSS.8.F.A.1