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Coordinate Geometry

RD Sharma

CBSE

Grade 10

Question:

The distance between the points $A(0, 6)$ and $B(0, -2)$ is:
(a) $6$
(b) $8$
(c) $4$
(d) $2$

Step-by-Step Solution

Key Concept: Since $x$-coordinates are $0$, $d = |y_2 - y_1| = |-2 - 6| = 8$.

$d = \sqrt{(0 - 0)^2 + (-2 - 6)^2} = \sqrt{64} = 8$. [1.0 Mark]

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🎯 Official CBSE Marking Scheme:
Calculating distance $= 8$: 1.0 Mark

Correct Answer: $8$

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