Welcome to your interview.
The question is on your right: Hyperplane Projections and Regression. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
Explain how hyperplane projections relate to probability problems, and walk me through how you would handle confounders when interpreting a linear regression.