Do we need to worry about the slope being 0?

[user1754]

Do we need to take cases where one of the slopes is 0? Pls help!

[Leaderboard]

I think the question itself is slightly different? Where is this from?

[user1754]

this is from Prepswift Coordinate geometry tickbox quiz.

Link: Tickbox Quiz #8

[yang]

The question appeared differently on my end.

The additional information should solve your question.

[user1754]

thank you