Evaluating Functions with Function Notation

f(x) is the same thing as ______.

• y

• x

• input

• an equation

For the function f(x) = -3x + 3 find f(0).

• 0

• -3

• 3

• -1

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 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 a function? Explain.

• Yes; it passes the horizontal line test.

• No; it is not a straight line.

• Yes; it passes the vertical line test.

• No; there is a line connecting the dots.

Is this a function?

• Yes

• No

• Let me ask my dog...

• Why are there letters in math?

What is the DOMAIN of this graph?

• -4 ≤ x ≤ 3

• -1 ≤ x ≤ 4

• 4 < x < 3

• -1 < x < 4

What is the range of the function?

• -7≤x≤6

• -7<x<6

• -8<y<2

• -8≤y≤2

Evaluate f(t)=-2t²+ 1 for f(-3)

• 19
  

• 37

• -17

• -11