Question

When point B (5, -1) is rotated 180º about the origin, its coordinate becomes (-5, 1).
True
False

Answer 1

True
http://www.wolframalpha.com/input/?i=plot+%285%2C-1%29+and+%28-5%2C1%29&a=*C.plot-_*PlotsWord-

Answer 2

Draw (5,-1) and then draw a circle that passes through (5,-1) with (0,0) as the origin.

Using your picture, move halfway around the circle, 180 degrees, and we arrive at (-5, 1). TRUE!

Answer 3

thank you for explaining that!

Answer 4

true

Answer 5

thankyou

Answer 6

at (x,y) at 180 degree =(-x,-y)

Answer 7

180 degree is rotation is just reflection about the origin

Answer 8

Think about odd functions ..