What is the image of P(7, -5) reflected across the line #y=2#?
1 Answer
Jan 25, 2018
Explanation:
Let,
Then, we know from Geometry, that,
Therefore, (1) : The mid-point** of
(2) :
But, the mid-pt. of
Note that,
vertical.
Recall that, the eqn. of a vertical line through
Hence, the eqn. of
Thus, by