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Assertion (A): The point (–2, 8) is invariant under reflection in line x = –2. Reason (R): If a point has its x-coordinate 0, it is invariant under reflection in both axes. - Mathematics

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Question

Assertion (A): The point (–2, 8) is invariant under reflection in line x = –2.

Reason (R): If a point has its x-coordinate 0, it is invariant under reflection in both axes.

Options

  • Both A and R are correct and R is the correct explanation for A.

  • Both A and R are correct and R is not the correct explanation for A.

  • A is true, but R is false.

  • Both A and R are true.

MCQ
Assertion and Reasoning
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Solution

A is true, but R is false.

Explanation:

A: True (–2, 8) lies on the line x = –2, so reflecting across that line leaves the point unchanged (invariant).

R: False x = 0 means the point lies on the y-axis, so it is invariant under reflection in the y-axis only, not under reflection in the x-axis unless its y-coordinate is also 0.

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Chapter 23: Competency focused practice questions - COMPETENCY FOCUSED PRACTICE QUESTIONS [Page 525]

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Nootan Mathematics [English] Class 10 ICSE
Chapter 23 Competency focused practice questions
COMPETENCY FOCUSED PRACTICE QUESTIONS | Q 44. | Page 525
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