Mathematics
Find the image of the point P(1, -2) in the line x = -1.
Reflection
25 Likes
Answer
We know that the reflection of the point (x, y) in the line x = a is the point (-x + 2a, y).
∴ The image of the point P(1, -2) under reflection in the line x = -1 is the point P'(-1 + 2 × (-1), -2) i.e., the point P'(-3, -2).
The coordinates of the point P' is (-3, -2).
Answered By
15 Likes
Related Questions
Find the image of the point P(-3, -5) in the line y = -2.
The point P(2, 4) on reflection in the line y = 1 is mapped onto P'. Find the coordinates of P'.
The point P(2, 3) is reflected in the line x = 4 to the point P'. Find the coordinates of the point P'.
A point P is reflected in the origin. Coordinates of its image are (2, -5). Find
(i) the coordinates of P.
(ii) the coordinates of the image of P in the x-axis.