2023 AISS EM S1 EOY P1 Q4

2023 AISS EM S1 EOY P1 Q4

3 marks

The figures in the sequence below are formed using sticks.

The table below shows the number of sticks in each figure:

Figure Number\({1}\)\({2}\)\({3}\)\({4}\)
Number of sticks\({6}\)\({11}\)\({16}\)\({x}\)
  1. Find the value of \({x}\).[1]
  2. Write down an expression, in terms of \({n}\), for the number of sticks used to form Figure \({n}\).[1]
  3. Figure \({y}\) has \({86}\) sticks. Find the value of \({y}\).[1]

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Answer:(a) \(x=21\) (b) \(5n+1\) (c) \(y=17\)

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