Question

Write parametric equation of line
having end points P1(3,5,8) and P2(6,4,3). *
(1) [3 5 8]+u[3 1 5]
(2) [3 5 8]+u[-3 1 5]
(3) [3 8 5]+u[3 -1 -5]
(4) [3 5 8]+u[3 -1 -5]​

Answer 1

Answer:

option 4 is the correct answer

Answer 2

SOLUTION

TO CHOOSE THE CORRECT OPTION

The parametric equation of line having end points P1(3,5,8) and P2(6,4,3).

(1) (3,5,8) + u(3,1,5)

(2) (3,5,8) + u(-3,1,5)

(3) (3,5,8) + u(3,-1,-5)

(4) (3,5,8) + u(-3,-1,-5)

EVALUATION

Here the given two points are P1(3,5,8) and P2(6,4,3)

So the line passes through the point P1(3,5,8)

Again direction ratio of the line

6 - 3 , 4 - 5 , 3 - 8

i.e 3 , - 1 , - 5

So the parametric equation of the line is

(3,5,8) + u(3,-1,-5)

FINAL ANSWER

Hence the correct option is

(3) (3,5,8) + u(3,-1,-5)

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