Question

What is the contrapositive of the statement below?

х =y
O A. X=-
B. y = -x
С. y = X
D. -* -

Answer 1

`\lnot y\Rightarrow \lnot x`

Explanation:

This is the definition of the contrapositive of an implication.

If you draw out the truth tables for each implication, you will see that those two implications are logically equivalent.