Functions Review

Which graph represents a function?

• 
• 
• 
• 

Which table does NOT represent a function?

• 
• 
• 
• 

Determine whether the relation shown here is a function. Explain your answer.

• function, an input has 1 output

• function, an input has 2 different outputs

• function, no output has 2 different inputs

• not a function, an input has 2 different outputs

What is another term for y-values?

• Independent Variable

• Dependent Variable

Does the following represent a function?

{(-7,0), (8,-4), (-8,-8), (5,1), (-8,9)}

• Yes

• No

Choose all the graphs that do not represent a function.

• 
• 
• 
• 

f(x) is the same thing as ______.

• y
• x
• input
• an equation

Given h(x) = 5 - 9x, find h(8). 

• h(8) = -360
• h(8) = -67

How would you write y = 2x - 3 in function notation?

• y = 2x-3

• f = 2x - 3

• f(x) = 2x-3

If f(x) = -3x - 8, find f(-1).

• f(-1) = 5

• f(-1) = -5

• f(-1) = -12

• f(-1) = -10