设集合U={(x,y)|y=3x-1},A={(x,y)|y−2x−1=3},则∁UA=_.

问题描述:

设集合U={(x,y)|y=3x-1},A={(x,y)|

y−2
x−1
=3},则∁UA=______.

∵集合U={(x,y)|y=3x-1},A={(x,y)|

y−2
x−1
=3}={(x y)|y=3x-1,且x≠1},
∴∁UA={(1,2)},
故答案为 {(1,2)}.