Function Identification Algebra

What is the value of x in:
f(4) = 3x - 1

• 11

• 4

• -1

• 0

What does x equal in the function:
f(-11) = 5x + 1

• -54 

• 5

• 1

• -11

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

• 9 

• 1

• -1

• -9

What does the f in "f(x)" usually stand for?

• function

• fraction

• factor

• ****

Is this a function?

• Yes, one output for each input

• No, look at the 2's

• It depends

• Not enough information

Is this a function?

• Yes, one output for each input

• No, look at the -3's

• It depends

• Not enough information

Is this a function?

• Yes, one output for each input

• No, multiple y-values for an x-value

• It depends

• Not enough information

Is the following relation a function: (2, 3) (4, 5) (5, 3)

• yes because one output for each input

• no because 3 appears twice as an output

• not enough information

• it depends

Is the following relation a function: (2, 3) (2, 4) (5, 10)

• yes because one input for each output

• no because 2 appears twice as an input with different outputs

• not enough information

• it depends

Is the following relation a function: (2, 3) (5, 10) (2, 3)

• yes because there is one output for each input

• no because 2 appears twice as an input

• not enough information

• it depends