Question

The transformation (X,Y) ➔ (2X, 2Y) is applied to triangle DEF. That image is then rotated 900 counterclockwise. If the coordinate of point F is (-3,2) what will be the coordinate of F’’?

a. (-6,4)
b. (-4,-6)
c. (6,-4)
d. (4,-6)

Answer 1

The answer is c. (6, -4)


-3 times 2 is -6 and 2 times 2 is 4. So after the transformation we are left with (-6,4).
Since 900 is just 360 to times plus 180; rotating it basically means that it will end up in the same place and if we rotated it 180. These means we need to switch the signs on the numbers (positive to negative and vice-versa). Which gives us the answer of (6,-4).