Question

@jim_thompson5910

Answer 1

To rotate any point (x,y) about the origin 90 degrees counterclockwise, you just swap the x and y coordinates. Then make the new x coordinate negative

So the rule is

(x,y) ---> (-y, x)

Answer 2

E is -4, 8
F is -7, 5
so now does -4 become positive 4
and -7 becomes positive 8?
@jim_thompson5910

Answer 3

wait do you mean it becomes -8, -4
and -5, -7 ?

Answer 4

E = (-4,8)

swap the coordinates to get (8,-4)

then change that 8 to -8

so E = (-4,8) turns into E ' = (-8, -4)

yep

Answer 5

(-5,-7) is correct for the other point

Answer 6

thank you :)

Answer 7

you're welcome

Answer 8

-do you mind if I ask a few more?

Answer 9

go ahead

Answer 10

Yay! Oh no medals please, they increase my smartscore >_<