Skip to content / Đến nội dung
ThichHocToan.com

2013 AMC 10B Question 14

AMC10 · 2013 AMC 10B

Question 14

Define $ a\clubsuit b=a^2b-ab^2 .$ Which of the following describes the set of points $ (x, y) $ for which $ x\clubsuit y=y\clubsuit x ?$
  1. A finite set of points
  2. One line
  3. Two parallel lines
  4. Two intersecting lines
  5. Three lines