NDA 2025 · PYQ · Functions · easy
Let f = {(1, 1), (2, 4), (3, 7), (4, 10)}. If f(x) = px + q, then what is the value of (p + q)?
- A.−1
- B.0
- C.1✓ Correct
- D.5
From f(1) = 1: p + q = 1. From f(2) = 4: 2p + q = 4. Subtracting: p = 3, so q = −2. Hence p + q = 1.
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