q) is true, we assume that p is
true and show that q is also true.3. To prove that an if--then statement (p q) is true, we assume that p is
true and show that q is also true.
Proof Suppose that a and b are integers and a = 4x + 1 and b = 4y + 1 for some integers x and y.
The question is asking you to prove something about the product a·b, so multiply the above expressions for a and b together.