M1 U1 Review

Is the relation a function? 
{(4,5), (4,-7), (4,2), (4,0), (4,9)}

• Yes
• No

Is this mapping a function or not a function? 

• Function
• Not a Function 

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.

Evaluate f(-2) if f(x) = x²+ 3.

• -1
• 1
• 7
• -7

Solve for f(5):
f(5) = -x + 4

• 9 
• 1
• -1
• -9

What is the value of f(0)?

• -2
• 2
• 4
• 0

What is f(2)?

• -4
• 8
• 0
• 5

If f(x)=6x²-4,
what is f(-1)?

• -2
• 13
• 2
• 0

If g(x) = -8x + 1, find g(-2).

• -8

• -15

• 17

• 8

Evaluate f(x)= 2x² + 5x - 17 for f(-1)

• -20

• -10

• -24

• -14