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Mathematics 4 ESO – Unit 6 FUNCTIONS Page 65 Activity 8

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