Good points... just answer the question correctly

R'(-9,4)   R'(9,-4)

Step-by-step explanation:

9514 1404 393

  (a)  R(-9, 4) ⇒ R'(9, -4)

Step-by-step explanation:

Reflection over the x-axis changes the sign of the y-coordinate only:

  (x, y) ⇒ (x, -y) . . . . . . . reflection over the x-axis

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When both signs are changed, the reflection is over the origin:

  (x, y) ⇒ (-x, -y) . . . . . . reflection over the origin (or rotation 180°, or reflection over both axes)

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All of the answer choices show one of these reflections. The first choice shows reflection over the origin, so the x-axis is not the line of reflection for ...

  R(-9, 4) ⇒ R'(9, -4) . . . . . . origin is the point of reflection

what is the approximate angle of acb if abc is 25cm and the length of segment bc is 15

step-by-step explanation:

answer: b.

step-by-step explanation:

the y coordinate for point b is 0, and answer b is the only one with that y coordinate.