Unit 3 Test Review

Flashcard
•
Mathematics
•
9th - 10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the rule for reflecting a point across the line y = -1?
Back
To reflect a point across the line y = -1, you take the y-coordinate of the point, subtract it from -1, and then add that difference to -1.
2.
FLASHCARD QUESTION
Front
What are the coordinates of a point A' after rotating point A (x, y) 180° about the origin?
Back
The coordinates of A' after a 180° rotation about the origin are (-x, -y).
3.
FLASHCARD QUESTION
Front
How do you translate a point M (x, y) using the rule (x, y) --> (x - 1, y)?
Back
To translate point M, subtract 1 from the x-coordinate while keeping the y-coordinate the same.
4.
FLASHCARD QUESTION
Front
What happens to the coordinates of a point I when it is reflected across the x-axis?
Back
When reflected across the x-axis, the x-coordinate remains the same, and the y-coordinate changes sign.
5.
FLASHCARD QUESTION
Front
How do you reflect a point D (x, y) over the line y = -x?
Back
To reflect a point over the line y = -x, swap the x and y coordinates and change their signs, resulting in (-y, -x).
6.
FLASHCARD QUESTION
Front
What is the effect of a reflection across the y-axis on a point (x, y)?
Back
Reflecting a point across the y-axis changes the sign of the x-coordinate, resulting in (-x, y).
7.
FLASHCARD QUESTION
Front
What is the effect of a reflection across the line y = 1 on a point (x, y)?
Back
To reflect a point across the line y = 1, subtract the y-coordinate from 2 and keep the x-coordinate the same, resulting in (x, 2 - y).
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