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nasty-shy [4]
3 years ago
8

12. The y-axis is NOT the line of reflection for which pair of points?

Mathematics
1 answer:
Rzqust [24]3 years ago
5 0

Option D: B(2,-2) \rightarrow B^{\prime}(2,2) is the pair of points which does not have y - axis as the line of reflection.

Explanation:

The translation rule to reflect the pair of points across the y - axis is given by

(x,y)\implies (-x,y)

<u>Option A</u>: B(3,-8) \rightarrow B^{\prime}(-3,-8):

Let us translate the coordinate B(3,-8) across y - axis using the translation rule (x,y)\implies (-x,y), we get,

(3,-8)\implies (-3,-8)

Thus, we get, B(3,-8) \rightarrow B^{\prime}(-3,-8)

Hence, the pair of points B(3,-8) \rightarrow B^{\prime}(-3,-8) has the line of reflection across y - axis.

Therefore, Option A is not the correct answer.

<u>Option B</u>: B(-6,2) \rightarrow B^{\prime}(6,2):

Let us translate the coordinate B(-6,2) across y - axis using the translation rule (x,y)\implies (-x,y), we get,

(-6,2)\implies (6,2)

Thus, we get, B(-6,2) \rightarrow B^{\prime}(6,2)

Hence, the pair of points B(-6,2) \rightarrow B^{\prime}(6,2) has the line of reflection across y - axis.

Therefore, Option B is not the correct answer.

<u>Option C</u>: B(5,-7) \rightarrow B^{\prime}(-5,-7):

Let us translate the coordinate B(5,-7) across y - axis using the translation rule (x,y)\implies (-x,y), we get,

(5,-7)\implies (-5,-7)

Thus, we get, B(5,-7) \rightarrow B^{\prime}(-5,-7)

Hence, the pair of points B(5,-7) \rightarrow B^{\prime}(-5,-7) has the line of reflection across y - axis.

Therefore, Option C is not the correct answer.

<u>Option D</u>: B(2,-2) \rightarrow B^{\prime}(2,2):

Let us translate the coordinate B(2,-2) across y - axis using the translation rule (x,y)\implies (-x,y), we get,

(2,-2)\implies (-2,-2)

Thus, we get, B(2,-2) \rightarrow B^{\prime}(-2,-2)

Hence, the pair of points B(2,-2) \rightarrow B^{\prime}(2,2) does not has the line of reflection across y - axis.

Therefore, Option D is the correct answer.

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