4. What are the coordinates of the image of point K(1, 3) after a reflection over the line y = - 1
A (2, 3)
B (1, - 5)
C (1-3)
D (- 2, 3)
To find the reflected coordinates of point K(1, 3) over the line y = -1, you can use the formula for reflecting a point over a line.
The formula for reflecting a point (x, y) over the line y = -1 is: (x, 2*(-1) - y)
Substitute the values of point K(1, 3) into the formula:
Reflected x-coordinate = 1
Reflected y-coordinate = 2*(-1) - 3 = -5
Therefore, the reflected coordinates of point K(1, 3) over the line y = -1 are B (1, -5).