Mathematics
The point (5, k) after reflection in x-axis becomes (5, -8). The value of k is.
8
-8
6
none of these
Answer
When a point is reflected in the x-axis, the x-coordinate remains the same, and the y-coordinate changes its sign.
In this case, the point (5, k) becomes (5, −8) after reflection. Since the x-coordinate remains 5, we equate the y-coordinate k to 8.
So, the value of k is 8.
Hence, option 1 is the correct option.
Related Questions
Mark two points P and Q 5.3 cm apart. Construct the perpendicular bisector of the line segment PQ.
Are the points P and Q symmetric with respect to the perpendicular bisector drawn?
Construct a rectangle ABCD in which AB = 7 cm and BC = 5 cm. Draw all its line(s) of symmetry.
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 (k, -k) after reflection in origin becomes (0, 0); the value of k is:
2
1
1
none of these