Let's go through each problem on the worksheet step by step, solving and explaining each one.
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Understanding Conditional Statements
A
conditional statement is in the form:
"If p, then q."
-
Hypothesis (p): The part after "if" — what is assumed to be true.
-
Conclusion (q): The part after "then" — what follows from the hypothesis.
A conditional statement is
false only when:
- The hypothesis is
true, and
- The conclusion is
false.
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Problems 1–2: Identify Hypothesis and Conclusion
1. If you can see the stars, then it is night.
-
Hypothesis: You can see the stars.
*(This comes after "if")*
-
Conclusion: It is night.
*(This comes after "then")*
✔ Answer:
- Hypothesis: You can see the stars
- Conclusion: It is night
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2. If x is an even number, then x is divisible by 2.
-
Hypothesis: x is an even number
-
Conclusion: x is divisible by 2
✔ Answer:
- Hypothesis: x is an even number
- Conclusion: x is divisible by 2
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##
Problems 3–5: Write a Conditional Statement
We need to rewrite each statement in
"If p, then q" form.
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3. Three noncollinear points determine a plane.
We rephrase this as a conditional:
>
If three points are noncollinear,
then they determine a plane.
✔ Answer:
*If three points are noncollinear, then they determine a plane.*
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4. Congruent segments have equal measures.
Rewrite in if-then form:
>
If two segments are congruent,
then they have equal measures.
✔ Answer:
*If two segments are congruent, then they have equal measures.*
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5. On Tuesday, play practice is at 6:00.
This is not in conditional form yet. We can interpret it as:
>
If it is Tuesday,
then play practice is at 6:00.
✔ Answer:
*If it is Tuesday, then play practice is at 6:00.*
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6. Venn Diagram: Insects and House Fly
The diagram shows:
- A large oval labeled
Insects
- A smaller oval inside it labeled
House Fly
This means:
All house flies are insects, but not all insects are house flies.
So we can write a conditional statement based on set inclusion:
>
If something is a house fly,
then it is an insect.
✔ Answer:
*If it is a house fly, then it is an insect.*
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Problems 7–8: Use the Conditional Statement
Given:
"If it is a bicycle, then it has two wheels."
7. Give the hypothesis of the conditional statement.
- The hypothesis is the part
after "if".
✔ Answer:
*It is a bicycle*
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8. Give the conclusion of the conditional statement.
- The conclusion is the part
after "then".
✔ Answer:
*It has two wheels*
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✔ Final Answers Summary:
1.
- Hypothesis: You can see the stars
- Conclusion: It is night
2.
- Hypothesis: x is an even number
- Conclusion: x is divisible by 2
3.
*If three points are noncollinear, then they determine a plane.*
4.
*If two segments are congruent, then they have equal measures.*
5.
*If it is Tuesday, then play practice is at 6:00.*
6.
*If it is a house fly, then it is an insect.*
7.
*It is a bicycle*
8.
*It has two wheels*
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Parent Tip: Review the logic above to help your child master the concept of conditional statement worksheet.