Warm Up 9-9
• Get out your homework from last night.
• Choose one of the problems and copy it to the warm up sheet.
• Try to determine the truth value of each statement.
• Do you notice a pattern?
Announcements
• Quiz Friday
Truth Values
• The Conditional and its Contrapositive are equivalent
statements. They are either both true or both false.
• The Converse and Inverse of a statement are also
equivalent statements. They are either both true or both
false.
Find the truth values for the following
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Conditional: If a woman is French, then she is European.
Converse:
Inverse:
Contrapositive:
Find the truth values for the following
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Conditional: If a number is divisible by 3, then it is odd.
Converse:
Inverse:
Contrapositive:
Ring of truth
• Write the statement for each card, then glue them onto the ring of truth
page.
• If statements are false, draw or write a counterexample.
Homework
• Pg. 54 #’s 26-30