Finding the reflection of a line in a plane

[SeerAlpha]

Homework Statement

Question:

Find the vector equation of the line r = (0,2,-1)+t(1,0,1), t belongs to real numbers, reflected in the plane 2x-y+z-9 = 0.

I am not sure on how to start solving this question and how do you reflect a line in a plane? What method would you use?

Thank you for your help!

Homework Equations

not sure

The Attempt at a Solution

not sure how to attempt the question

 

[Simon Bridge]

how do you reflect a line in a plane?

Think of the plane as a mirror ... all you need is the reflection of any vector pointing along the line, and one point on the line.

 

[SeerAlpha]

ah I solved the question! thanks for your help! :D

 

[Simon Bridge]

No worries.
If you showed us your solution, it would help others stuck in the same place you were.