A2 - Chapter 2 Test

f(x)=x²-5x
f(4)=

• -4
• 126
• 24
• 84

f(x) = 3x² - 11
Find f(-5)

• f(-5) = 64
• f(-5) = -86
• f(-5) = 214
• f(-5) = -7

What is the domain of this graph?

• [-1,1]
• [-2,2]
• (-1,-2)
• (-∞,+∞)

What is the range of this graph?

• (-∞,+∞)
• (-2,2)
• (-1,1)
• [-2,2]

What is the domain of this function?

• (-∞,2]
• (-∞,+∞)
• [2,-∞)
• (-4,2)

Is this a function?  Why or why not? 

• Yes, because none of the domain numbers repeated.
• Yes, because none of the range letters repeated.
• No, because 3 goes to A and 4 goes to A.
• No, because A gets used twice.

What is the range of this function?
{(9,8), (7,6), (5,4), (3,2)}

• [3,9]
• [2,8]
• {3,5,7,9]
• {2,4,6,8}

Does this Mapping Diagram repersent a function?

• Function
• No Function
• I Don't Know

Is this graph a function? (Vertical Line test)

• Yes
• No
• I Don't Know

Is this relation a Function?

• Yes
• No
• I Don't Know