For any integer b, b ÷ (-1) is ______.
b
1
-b
Not defined
Here, for any integer b, b−1=−b.
Let f = {(1, 1), (2, 3), (0, –1), (–1, –3)} be a function from Z to Z defined by f(x) = ax + b, for some integers a, b. Determine a, b.
(i) For any integer a, what is (− 1) × a equal to?
(ii) Determine the integer whose product with (− 1) is
(a) − 22 (b) 37 (c) 0