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(a) Reflect the point (9, 4) across the X-axis:
(b) Reflect the point (9, 4) across the y-axis:

Sagot :

Semsee45idn

Answer:

(a)  (9, -4)

(b)  (-9, 4)

Step-by-step explanation:

Reflection in the x-axis

When reflecting a point across the x-axis, the x-coordinate stays the same but the y-coordinate becomes its additive inverse.

Mapping rule:  (x, y) → (x, -y)

Therefore:

  • (9, 4)  → (9, -4)

Reflection in the y-axis

When reflecting a point across the y-axis, the y-coordinate stays the same but the x-coordinate becomes its additive inverse.

Mapping rule:  (x, y) → (-x, y)

Therefore:

  • (9, 4)  → (-9, 4)
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