Watch the video on “Linear Functions” and answer:

• a)  What is a function?
• b)  What form of equation is an example of a linear function?
• c)  What variable is the “dependent variable”?
• d)  What variable is the “independent variable”?
• e)  Solve f(x) = 9x – 3 for:
  • I)  x = 5
  • II)  x = 0
  • III)  x = 3
  • IV)  x = -2       
• f)  Solve f(x) = 4x² + 5x + 8 for:
  • I)  x = 1
  • II)  x = -2
  • III)  x = 0
  • IV)  x = -5