If sets A and B are defined as
A = {(x, y) | y = \(\rm \frac{1}{x}\) 0 ≠ x ∈ R}
B = {(x, y) | y = – x, x ∈ R}, then
1
A ∩ B = A
2
A ∩ B = B
3
A ∩ B = ϕ
4
A ∪ B = A
If sets A and B are defined as
A = {(x, y) | y = \(\rm \frac{1}{x}\) 0 ≠ x ∈ R}
B = {(x, y) | y = – x, x ∈ R}, then