hello, I need help with the numbers 4.1 and 4.2 below.

I included pictures.

4.1 exercises, numbers 6, 8, 18, 22

4.1 Exercises In Exercises I through 4, find x or y so that the statement is In Exercises 12 and 13, let A = (a | a is a real number) and true. B = {1, 2, 3). Sketch the given set in the Cartesian plane. 1. (a) (x, 3) = (4.3) (b) (a, 3y) = (a, 9) 12. A x B 13. B X A 2. (a) (3x + 1, 2) = (7,2) In Exercises 14 and 15, let A = (a | a is a real number and (b) (C++, PASCAL) = (), x) -2