Q 1753167944.     If a line passes through the points `(6,- 7, -1)` and
`(2, - 3, 1)`, then what are the direction ratios of the
line?

NDA 2014 Paper 1 April
A

`< 4, - 4, 2 >`

B

`< 4, 4, 2 >`

C

`< -4, 4, 2 >`

D

`< 2, 1, 1 >`

HINT

`(x_1, y_1, z_1)` and `(x_2 , y_2 , z_2 )`, then its direction ratio is `< x_2 - x_1 , y_2 - y_1, z_2 - z_1 >`.

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