Graphs of Functions

  • For each question, choose the most suitable answer
    • 1. Encik Malik bought a new house. He paid a down payment of RM 10 000 and a monthly installment of RM 400. The relationship between the price of the house, RM <i>y</i> and the monthly installment for <i>x</i> month is
      • A) <i>y</i> = 10 000 - 400<i>x</i>
      • B) <i>y</i> = 10 000<i>x</i> - 400
      • C) <i>y</i> = 10 000 + 400<i>x</i>
      • D) <i>y</i> = 10 000<i>x</i> + 400
    • 2. A ballon contains 800 `@cm^3@` of air. The air leaks out from the ballon at a rate of 15 `@cm^3@` every second. The relationship between the volume, <i>V</i> `@cm^3@`, of air in the balloon and the time, <i>t</i> seconds is
      • A) V = 800 + 15<i>t</i>
      • B) V = 800 - 15<i>t</i>
      • C) V = 800<i>t</i> + 15
      • D) V = 800<i>t</i> - 15
    • 3. The perimeter of a square is four times the length of one of its sides. The independent variable in the above relationship is
      • A) 4
      • B) length of one side
      • C) 4 x length of one side
      • D) Perimeter of the square
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