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The area of Delta PQR is 4 sq. units Q a...

The area of `Delta PQR` is 4 sq. units Q and R are (1, 1) and (1, 0) respectively. Which of the following lines is a part of the locus of P?

A

`x - 6 = 0`

B

`x - 7 = 0`

C

`x + 8 = 0`

D

`x + 7 = 0`

Text Solution

Verified by Experts

The correct Answer is:
D
(i) Area of triangle is given by
`(1)/(2) |{:(x_(1) - x_(2),x_(2) - x_(3)),(y_(1) - y_(2),y_(2) - y_(3)):}|`
(ii) Substitute `(x_(2),y_(2)) = (1,1), (x_(3), y_(3)) = (1,0)` and obtain the relation in terms of `x_(1)` and `y_(1)`
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