Question

Isilah
titik-titik:cermin
(3,4) : sumbu x ...=sumbu y ...=garis y=x ....=garis y=-x ...=x=5 ...=y=3
(3,-2) :cerminanya sama kayak yg di atas.
(5,-3) : cerminanya sama kayak yg di atas.

tolong dijawab ya...

Answer 1

ttk.(3,4):
sb x = (x,-y,) = (3,-4)
sb.y = (-x,y) = (-3,4)
grs y=x ---> (y,x) = (4,3)
grs.y=-x ---> (-y,-x) = (-4,-3)
grs.x=5 ---> (2k-x,y) = (2.5-3,4) = (7,4)
grs.y=3 ---> (x,2k-y) = (3,2.3-4) = (3,2)