Math Problem Statement
Solution
The problem involves reflecting triangle ABC over the y-axis. To find the coordinates of the reflected triangle, we need to apply the rule for reflecting points over the y-axis:
- For a point , its reflection over the y-axis will be .
Let’s apply this to each vertex of triangle ABC.
- Point A is at . Its reflection, , will be at .
- Point B is at . Its reflection, , will be at .
- Point C is at . Its reflection, , will be at .
Therefore, the coordinates of the reflected triangle A'B'C' are:
- ,
- ,
- .
The correct answer is , which corresponds to the third option in the list.
Do you want further details on reflections, or have any questions?
Here are 5 related questions to practice:
- What are the coordinates of a point reflected over the x-axis?
- How do the coordinates change when reflecting a point over the origin?
- What is the rule for reflecting a point over the line ?
- Can a triangle be mapped to itself by reflection? Under what conditions?
- What is the result of reflecting a triangle over both the x-axis and the y-axis?
Tip: When reflecting over the y-axis, only the x-coordinate changes sign, while the y-coordinate remains the same.
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Math Problem Analysis
Mathematical Concepts
Geometry
Coordinate Geometry
Reflections
Formulas
For a point (x, y), its reflection over the y-axis is (-x, y)
Theorems
Reflection Theorem in Coordinate Geometry
Suitable Grade Level
Grades 7-9