Functions or Not a Function and Direct Variation and Proportional and Not Proportional

• Linear, not proportional

• Quadratic

• Inverse variation

• Direct Variation or Proportional

• Exponential

• Linear, not proportional

• Quadratic

• Inverse variation

• Direct Variation or Proportional

• Exponential

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.

Is this mapping a function or not a function? 

• Function

• Not a Function 

Is this table a function or not a function? 

• Function

• Not a Function 

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

• Function

• Not a function

Is this graph a function or not a function? 

• Function

• Not a Function

Is this graph a function or not a function? 

• Function

• Not a Function

Is this graph a function or not a function? 

• Function 

• Not a Function

Is this table a function or not a function? 

• Function

• Not a Function