Question

find the coordinates of the image kf the point p(1,2,1) in the plane 2x+y-z-9=0​

Answer 1

Answer:

His First Flight’ is an inspiring short story by Liam O’Flaherty. It is a psychological study of why people find it difficult to take initiative in life. The story also suggests some solutions to the issue. The story also emphasizes the role of parents in the formation of children.

A young seagull was afraid to make its first flight. His parents tried everything to make him fly. They even threatened to starve him. But nothing worked. Then the mother played a trick on him. Picking up a piece of fish, she flew near him and stopped just in front of him. Maddened by hunger he jumped for the fish forgetting about the danger involved. During his headlong fall his wings spread and naturally he was able to fly.

Answer 2

P:(1,2,3)letimageQ(x,y,z)

Equationoflineperpendiculartoplaneand

passingthroughP(1,2,3)is

2

x−1

=

−1

y−2

=

1

z−3

=λ

(2λ+1,−λ+2,λ+3)

∴2(2λ+1)−(−λ+2)+(λ+3)+3=0

4λ+2+λ−2+λ+3+3=0

6λ=−6

λ=−1

∴PointN:(−1,3,2)

Nismid−pointofPQ.

2

1+x

1

=−1,

2

2+y

1

=3,

2

3+z

1

=2

x

1

=−3,y

1

=4,z

1

=1

(−3,4,1)