I was wondering what would a triangle and its reflection image in the x-axis look like?
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OpenStudy (ayyookyndall):
@confluxepic
OpenStudy (confluxepic):
You multiply every y point of the triangle and graph it.
OpenStudy (confluxepic):
|dw:1426804512648:dw|
OpenStudy (confluxepic):
|dw:1426804534143:dw|
OpenStudy (ayyookyndall):
So it would look like this?
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OpenStudy (ayyookyndall):
@confluxepic
OpenStudy (confluxepic):
Correct. @ayyookyndall
OpenStudy (ayyookyndall):
Can you help me with one more?
OpenStudy (confluxepic):
Sure.
OpenStudy (ayyookyndall):
Which image has reflectional, rotational, and point symmetry?
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OpenStudy (ayyookyndall):
This is A
OpenStudy (ayyookyndall):
This is B
OpenStudy (ayyookyndall):
This is C
OpenStudy (ayyookyndall):
This is D
OpenStudy (ayyookyndall):
@confluxepic
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OpenStudy (confluxepic):
Hold on.
OpenStudy (ayyookyndall):
Isn't it A?
OpenStudy (confluxepic):
Yeah. I think so but I may not be that correct.
OpenStudy (ayyookyndall):
Should we ask for help?
OpenStudy (confluxepic):
@TheSmartOne
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OpenStudy (ayyookyndall):
@bibby
OpenStudy (bibby):
Given the reflection symmetry, we can cancel B and D. They're not mirror images of themselves when cut down horizontally.
Given rotational symmetry we can cancel C because it's an oval, not a circle. When you rotate it one way it'll be longer than the other way
OpenStudy (bibby):
so A
OpenStudy (confluxepic):
So yeah. We were correct. @ayyookyndall
OpenStudy (ayyookyndall):
C also has doesnt have point symmetry. You would need a point.
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