Check whether the columns lie in a straight line — task. Maths CBSE Live product, Class 9 (2026-27).

A fence needs to be constructed on one side of the house. Engineers needs to verify the columns \(A(5, 10)\), \(B(7, 14)\) and \(C(9, 18)\) lie in a straight line.

Answer:

\(AB =\)

i \sqrt{i}

\(BC =\)

i \sqrt{i}

\(AC =\)

i \sqrt{i}

Thus,

The columns in a straight line.

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8. Check whether the columns lie in a straight line

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