A point P(-4, 5) is reflected in line y = 3 to P'. Find the coordinates of P'.
(-5, 1)
(-5, 2)
(-4, 2)
(-4, 1)
Let P' be the image
y = 3 acts as the mirror, Using midpoint formula
So y+52=3
⇒ y = 1
Hence P' = (-4, 1).
(a) In a H.P, find T19
(b) In a H.P, find T7 and T12