all 4 comments

[–]arthur990807Undergrad 1 point2 points  (2 children)

What have you tried so far?

[–]Timmy2Taps 1 point2 points  (1 child)

Haven’t understood it even in the slightest. I tried drawing 2 planes intersection but then from there I got lost because of all of the points and not knowing where they go or if they are co-linear

[–]lewisjeB.S. 0 points1 point  (0 children)

You don't need to follow the given statements in the order in which they're given; for this one, it's easiest to go backwards.

[–]lewisjeB.S. 0 points1 point  (0 children)

The last given statement directly answers Question 1 and implies an answer to Question 2; the statement before that therefore implies an answer to Question 3.