12. The y-axis is NOT the line of reflection for which pair of points? B(3, –8) → B′(–3, –8) B(–6, 2) → B′(6, 2) B(5, –7) → B′(–5, –7) B(2, –2) → B′(2, 2)

B(2,-2) → B'(2,2) is not reflected across the y-axis.

Step-by-step explanation:

When a point is reflected across the y- axis then its x-coordinate changes its sign, if the sign is negative then it is changed to positive and vice-versa, but the y-coordinate remains to be the same.

In the given points, Points reflected across the y- axis are

B (3,-8) → B'(-3,-8)

B (-6,2) → B'(6,2)

B (5,-7) → B'(-5,-7)

The point which is not reflected across the y- axis is B(2,-2) → B'(2,2)

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step-by-step explanation:

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