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The Point P (A, B) is First Reflected in the Origin and Then Reflected on the Y-axis to P’. If P’ Has Co-ordinates (3, – 4), Evaluate A, B. - Mathematics

Sum

The point P (a, b) is first reflected in the origin and then reflected on the Y-axis to p’. If P’ has co-ordinates (3, – 4), evaluate a, b.

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Solution

P(a, b) after reflection at the origin = (-a, -b) (-a, -b) after reflection on the Y-axis = p'(a - b)
According to question,
⇒ (a, -b) = (3, -4)
⇒ a = 3, -b = -4
⇒ a = 3, b = 4.

Concept: Reflection Examples
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APPEARS IN

ICSE Class 10 Mathematics
Chapter 7 Reflection
Exercise | Q 2
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