What is the bi-conditional statement of the conditional statement below? What is the truth value?

If you live in Dallas, then you live in Texas.

You live in Dallas if and only if you live in Texas.
Truth Value: False

If you do not live in Dallas, then you do not live in Texas.
Truth Value: False

If you do not live in Texas, then you do not live in Dallas.
Truth Value: True

If you live in Texas, then you live in Dallas.
Truth Value: True