The lines = 2, = 5, y = 3 & y = –4 form a rectangle. Find equations of its diagonals.
7 + 3y = 26; 7 - 3y = 3
7 + 3y = 26; + y = 2
7 – 3y = 26; 7 + 3y = 23
– 3y = 26; - 3y = -25
2 + 3y = -26; 2 - 3y = 3