Functions and Evaluating Functions

It is a set of ordered pairs.

• Function

• Relation

• Domain

• Range

A set of ordered pairs where no two pairs have he same first element (x).

• Relation

• Domain

• Function

• Range

Find the domain of the ordered pair ((1,2), (2,3), (3,4))

• (1, 2, 3)

• (3, 4, 2)

• (2, 3, 4)

• (1, 2, 4)

It is a visual way if a curve is a function or not.

• Curve Test

• Horizontal Test

• Vertical Line Test

• None of the above

Find the range of the ordered pair {(2,9), (3,11), (5,13), (7,15)}

• 2, 3, 5, 7

• 9, 11, 13, 15

• 2, 9, 3, 11, 5

• 3, 9, 11, 13

A function in which the same y value is never paired with two different x value.

• One to Many Function

• One to One Function

• Many to many Function

• None of the Above

All of the following graph is a function EXCEPT:

• 
• 
• 
• 

A method of determining whether or not a graph represent a one-to-one function.

• Horizontal Line Test

• Piecewise Function

• Square Root Method

• Vertical Line Test

Find  $f\left(3\right)$  when  $f\left(x\right)\ =\ 4x\ -\ 9$   

•  $f\left(3\right)\ =\ 34$  

•  $f\left(3\right)\ =\ 3$  

•  $f\left(3\right)=21$  

•  $f\left(3\right)=43-9$  

Evaluate Evaluate $h\left(x\right)=x^2+2$  for  $x=-2$  

• $$h\left(-2\right)=-2$$  

•  $$h\left(-2\right)=6$$ 

•  $$h\left(-2\right)=4

   

• $$h\left(-2\right)=-6