Find the reflection of the following points in y-axis:

(i) (9, 10)

(ii) (9, 0)

(iii) (0, 9)

(i) When a point is reflected in y-axis, the sign of its x-coordinate (abscissa) changes.

Reflection of (9, 10) in y-axis = (-9, 10).

(ii) When a point is reflected in y-axis, the sign of its x-coordinate (abscissa) changes.

Reflection of (9, 0) in y-axis = (-9, 0).

(iii) When a point is reflected in y-axis, the sign of its x-coordinate (abscissa) changes.

Reflection of (0, 9) in y-axis = (0, 9).