First slide

Equation of line in Straight lines

Question

The image of P(a, b) on the line y = - x is Q and the image of Q on the line y = x is R. Then the midpoint of PR is

Moderate

A

$(a + b, b + a)$
B

$((a + b) / 2, (b + 2) / 2)$
C

$(a - b, b - a)$
D

$(0, 0)$

Solution

The point Q is (-b, -a) and the point R is (-a, -b). Therefore, the midpoint of PR is (0, 0).

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App