First slide

Equation of line in Straight lines

Question

Distance between $P (x_{1}, y_{1})$ and $Q (x_{2}, y_{2})$ when PQ is parallel to y-axis is

Easy

A

$x_{1} - x_{2}$
B

$|x_{1} - x_{2}|$
C

$y_{1} - y_{2}$
D

$|y_{1} - y_{2}|$

Solution

When PQ is parallel to y-axis $x_{1} = x_{2}$ and
the required distance is $|y_{1} - y_{2}|$

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