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  • Find the distance between P (x1, y1) and Q (x2, y2) when (i) PQ is parallel to the y-axis.

Q : 3         Find the distance between P(x_1,y_1) and  Q(x_2,y_2)  when :

                (i) PQ is parallel to the y-axis.

Answers (1)

best_answer

When PQ is parallel to the y-axis 
then, x coordinates are equal i.e. x_2 = x_1
Now, we know that the distance between two points is given by
D = |\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}|
Now, in this case x_2 = x_1
Therefore,
D = |\sqrt{(x_2-x_2)^2+(y_2-y_1)^2}| = |\sqrt{(y_2-y_1)^2}|= |(y_2-y_1)|
Therefore, the distance between P(x_1,y_1) and  Q(x_2,y_2)  when  PQ is parallel to y-axis  is |(y_2-y_1)|

Posted by

Gautam harsolia

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