Question

The image of the point (3, 4) in x-axis has the coordinates
(a) (–3, 4)
(b) (3, –4)
(c) (–3, –4)
(d) (4, 3)

Answer 1

Under reflection of a point in the x-axis, the abscissa of the point remains unchanged while the sign of the ordinate is changed. So, the image of the point (x, y) in the x-axis is (x, −y).

Thus, the image of the point (3, 4) in the x-axis is (3, −4).

Hence, the correct answer is option (b).