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BECE Mathematics 2025 Paper

Question : 20

Total: 40

Solution:

Concept:

Use any two input-output pairs from the mapping to find the linear rule in the form

t \to mt + c

Explanation:

From the mapping,

t=1 \to 9

and

t=2 \to 17

So,

m(1) + c = 9

and

m(2) + c = 17

Subtract the first from the second:

m = 8

Then

8 + c = 9

, so

c = 1

Therefore, the rule is

t \to 8t + 1

Answer:

t \rightarrow 8t+1

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