Question

Given ABCD with A = (1,1), B = (4, 2), C = (4, 5), and D = (1, 4), what are the coordinates for Point A' if the y-axis is the reflecting line?

Answer 1

• The coordinates of A' are (- 1, 1)

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A' is the reflection of A in the y-axis.

Rule for reflection in the y-axis:

• (x, y) → ( - x, y)

Apply the rule for point A:

• A → A'
• (1, 1) → (- 1, 1)