Maths-
General
Easy

Question

The endpoints of 𝐴𝐵 are A (100, -111) and B
(222, 525). A reflection of 𝐴𝐵 results in the image 𝑋𝑌, with coordinates X (-100, -111) and Y (-222, 525). Tell which axis 𝐴𝐵 was reflected in and write the coordinate rule for the reflection.

hintHint:

In reflection, mirror image is formed.

The correct answer is: y – axis is the line of reflection and (x , y) → (- x , y) is the coordinate rule


    It is given that A (100, - 111)  X (- 100, - 111) and
    B (222, 525) → Y (- 222 , 525)
    i.e. y – coordinate is same and x – coordinate is negative of the original ordinate.
    We know that (x , y) → (- x , y) is the coordinate rule for the reflection when y – axis is the line of reflection.
    rightwards double arrow y – axis is the line of reflection and (x , y) → (- x , y) is the coordinate rule

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