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CUET · MATHS · PYQ PAPER 2025

If the area of a triangle with vertices \((-3,0),(3,0)\) and \((0, k)\) is 9 sq. units, then \(k\) equals

  1. A \(0\)
  2. B \(-3\)
  3. C \(\pm 3\)
  4. D 3
Verified Solution

Answer & Solution

Correct Answer

(C) \(\pm 3\)

Step-by-step Solution

Detailed explanation

Base \(b = 3 - (-3) = 6\) Height \(h = |k|\) Area \( = \frac{1}{2}bh \Rightarrow 9 = \frac{1}{2}(6)|k|\) \(9 = 3|k|\) \(k = \pm 3\)