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Grade 8 · Functions & Relationships
Functions & Relationships: Flow Diagrams, Tables and Formulae
WORKSHEET
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  / 14

Answer all questions. Show all your working — marks are awarded for method as well as the final answer.

  1. 1
    Rule: × 2 + 5. Find the output when the input is 6.
    (2)
  2. 2
    Rule: y = 4x − 3. Find y when x = 5.
    (2)
  3. 3
    Rule: y = 4x − 3. Find x when y = 17.
    (2)
  4. 4
    Rule: × 10. Complete: 3 → ___ and ___ → 70
    (2)
  5. 5
    Find the rule: 1→3, 2→5, 3→7, 4→9
    (2)
  6. 6
    Find the rule: 1→6, 2→12, 3→18
    (2)
  7. 7
    Rule: y = x2 + 1. Find y when x = 4.
    (2)
TOTAL: 14 marks
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