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Mathematics 8 Online
OpenStudy (jjuden):

Read each statement. Write the statement as: a) a conditional statement in If…, then….format b) a converse to the conditional statement c) an inverse to the conditional statement d) a contrapositive to the conditional statement

OpenStudy (jjuden):

1. When you practice, you gain more skill. a) conditional statement: b) converse c) inverse d) contrapositive

OpenStudy (jjuden):

2. On your birthday, you get a present. a) conditional statement: b) converse c) inverse d) contrapositive 3. Two angles that form a vertical pair are equal. a) conditional statement: b) converse c) inverse d) contrapositive 4. Review your answers for number 3. Evaluate if each statement is true or false. If it is false, draw/provide a counterexample (a sketch proving it is false). a) conditional statement: true or false? b) converse: true or false? c) inverse: true or false?

OpenStudy (usukidoll):

you mean one of those if ... then... statements.

OpenStudy (usukidoll):

If A then B... conversely, if B then A.

OpenStudy (jjuden):

im confused

OpenStudy (wwwhhhaaattt?):

Do not give Direct Answers!

OpenStudy (usukidoll):

like. If I go to the park, then I'm playing basketball. Conversely, if I'm playing basketball, then I go to the park.

OpenStudy (usukidoll):

I wasn't giving direct answers... just hints brah!

OpenStudy (usukidoll):

AN EXAMPLE brah!

OpenStudy (jjuden):

well sh*t i still dont get omg

OpenStudy (jjuden):

i hate this bs

OpenStudy (usukidoll):

What is your A and what is your B?

OpenStudy (jjuden):

which ?

OpenStudy (usukidoll):

this is logic stuff and I've been through it but I can't help if there's a FFFFFFFF* troll accusing me of bs that I didn't do.

OpenStudy (jjuden):

what

OpenStudy (usukidoll):

So I'll give an example sentence... NOT GIVING A DIRECT ANSWER ***H*** Let's try... If it's Sunday, then I'll go to church . Let A = it's Sunday and Let B = I'll go to church If A then B

OpenStudy (jjuden):

@WWWHHHAAATTT? do you know what to do?

OpenStudy (usukidoll):

Conversely, If B then A Conversely, If I go to church, then it's Sunday with B = go to church and A = it's Sunday

OpenStudy (jjuden):

ohhhhhhhhhhhhhh

OpenStudy (usukidoll):

:)

OpenStudy (wwwhhhaaattt?):

Ok, What Question do you need help with?

OpenStudy (usukidoll):

So Contrapositive is a reverse negation...

OpenStudy (jjuden):

so a for #1 is you gain more skill and b would be; when you practice?

OpenStudy (usukidoll):

we need to figure out the rest of the choices first before we move on.. It sounds like a converse... LIke if you gain more skill, then you'll practice... Conversely If you'll practice, then you gain more skill

OpenStudy (jjuden):

what would inverse be?

OpenStudy (usukidoll):

So anyway let me tell you what Contra-positive is Remember my if it's Sunday, then I'll go to church A = it's sunday B = go to church Negation is IF NOT A THEN NOT B If it's not Sunday, then I won't go to church... Contrapositive is IF NOT B THEN NOT A If I won't go to church, then it's not Sunday.

OpenStudy (usukidoll):

hmm never encountered the word inverse before... All I know is that there is a conditional statement, conversely, negation, and contrapositive.

OpenStudy (jjuden):

so d on #1 would be You wiil not gain more skill if you dont practice

OpenStudy (usukidoll):

so for the first one... you leave it as is for the conditional statement. When you practice, you gain more skill. A = you practice B = Gain more skill If A then B if B then A is the converse If NOT A then NOT B if NOT B then NOT A is the contrapositive

OpenStudy (usukidoll):

yay!

OpenStudy (usukidoll):

OH I KNOW! The inverse must be the negation of the original sentence. When you practice, you gain more skill. A = you practice B = Gain more skill that's the conditional... what is the negation. HINT: IF NOT A THEN NOT B

OpenStudy (jjuden):

i got the other 3 but not inverse

OpenStudy (usukidoll):

I think inverse means negation... maybe your book is using a different term than mine, but I know there are only four possible outcomes

OpenStudy (jjuden):

ok

OpenStudy (jjuden):

ok i got inverse

OpenStudy (jjuden):

for #1 a is the origanal statement b is you gain more skill, when you practice c is when you don't practice, you won't gain more skill d is the you wont gain more skill if you dont practice

OpenStudy (usukidoll):

YAY! :D

OpenStudy (usukidoll):

the next two questions operate like this, but the fourth one requires some real thinking D:

OpenStudy (jjuden):

how will the 4th on work?

OpenStudy (usukidoll):

hmm if it's false, you have to disprove the statement you have and depending on what the topic is that may not be easy.

OpenStudy (usukidoll):

it's best to understand what's really going on before trying to attempt a proof.

OpenStudy (jjuden):

ok

OpenStudy (jjuden):

thank you so much :)

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