All About Functions

Does this mapping diagram represent a function?

• No, because there are repeating input values

• Yes, because there are no repeating input values

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 set of ordered pairs a function or not a function? 

• Function

• Not a Function 

Tags

CCSS.8.F.A.1

Which of the following represents a function?

• None of the above

Tags

CCSS.8.F.A.1

• A line with a positive slope that crosses the y-axis at 3

• A line with a negative slope that crosses the y-axis at 3

• A line with a positive slope that crosses the y-axis at -3

• A line with a negative slope that crosses the y-axis at -3

Which of the following is a function?

Tags

CCSS.8.F.A.1

Which of the following is not a function?

Which of the following sets represents a function?

Tags

CCSS.8.F.A.1

Which of the following sets represents a relation but not a function?

Tags

CCSS.8.F.A.1

Is this a direct variation?
y=2x

• yes

• no