Mathematics
The point (k, -k) after reflection in origin becomes (0, 0); the value of k is:
2
1
1
none of these
Symmetry
2 Likes
Answer
When a point is reflected in the origin, sign of the x-coordinate and y-coordinate both changes.
In this case, the point (k, -k) becomes (-k, k) after reflection. So, we equate the x-coordinate k to 0.
So, the value of k is 0.
Hence, option 4 is the correct option.
Answered By
3 Likes
Related Questions
The point (5, k) after reflection in x-axis becomes (5, -8). The value of k is.
8
-8
6
none of these
The point (-k, -6) after reflection in y-axis becomes (-4, -6), the value of k is:
-4
4
8
none of these
The point (7, -6) is rotated about origin by 180° in the clockwise direction. The resulting point is:
(-7, -6)
(7, 6)
(-7, 6)
(0, -6)
The point (-3, 2) is rotated about origin by 90° in the anticlockwise direction. The resulting point is:
(2, 3)
(2, -3)
(-2, -3)
(3, 2)