Math Problem Statement
What is the image of the point left parenthesis, minus, 7, comma, 5, right parenthesis(−7,5) after a rotation of 180, degrees180 ∘ counterclockwise about the origin?
Solution
To determine the image of the point after a counterclockwise rotation about the origin, we use the following rule for a rotation:
Applying the rule:
Given the point :
- The -coordinate becomes ,
- The -coordinate becomes .
Result:
The image of the point after the rotation is:
Would you like additional details or clarification?
Here are 5 related questions to expand your understanding:
- How do other rotation angles, such as or , transform points?
- How would this change if the rotation occurred about a different point (not the origin)?
- What are the properties of transformations like rotations (e.g., do they preserve distance)?
- How would the transformation affect a geometric shape rather than just a point?
- What is the relationship between clockwise and counterclockwise rotations?
Tip: Always sketch a coordinate grid for visualization—it makes rotations much easier to comprehend!
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Math Problem Analysis
Mathematical Concepts
Coordinate Geometry
Transformations
Rotations
Formulas
(x, y) → (-x, -y) for a 180° rotation about the origin
Theorems
Properties of rotations (distance and angle preservation)
Suitable Grade Level
Grades 8-10
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