Practice variation 1 of 3
Vectors — Reflection from a projection
Your question
The projection of onto a line through the origin is . The reflection of in that line is
This practice question was inspired by Question 9 in the 2020 NSW HSC Mathematics Extension 1 examination, © NESA. It is an original TestMum variation that practises the same mathematical idea, not an official NESA question.
Before you check
- Have you stated every choice or assumption?
- Can another student follow each line?
- Did you verify the final result independently?