Determining and Evaluating Functions

1. For f(x) = 3x² - 2x + 4, what is f(0)?

 f(0) = 3
 f(0) = -2
 f(0) = 4

2. For f(x) = 5x² - 5x + 1, what is f(2)?

  f(2) = 1
  f(2) = 11
  f(2) = 31

3. For f(x) = x² + x + 1, what is f(-3)?

  f(-3) = 7
  f(-3) = -3
  f(-3) = -5

4. For f(x) = - 4, what is f(25)?

  f(25) = 1
  f(25) = 21
  f(25) = -9

5. Does the table below determine a function?

 yes
 no
 not enough information

6. Does the table below determine a function?

 yes
 no
 not enough information