Question

Help will medal and fan directness pls not a lot of time



For the transformation T, what is T-1?

T : (x, y) (x + 4, y + 3)
T-1: (x, y)

(x - 4, y - 3)
(-4x, -3y)
(x + 3, y + 2)

Answer 1

If P(-2, 1) is rotated 90°, its image is

(2, -1)
(1, -2)
(-1, -2)

Answer 2

using matrix 90 degree rotation is \[\left[\begin{matrix}0 & -1 \\ 1 & 0\end{matrix}\right]*\left(\begin{matrix}-2 \\ 1\end{matrix}\right)\]

Answer 3

so its c??

Answer 4

we get \[\left(\begin{matrix}0*-2+(-1)*1 \\ 1*(-2)+0*1\end{matrix}\right)\]

Answer 5

ok i think im confused

Answer 6

\[\left(\begin{matrix}0-1 \\ -2+0\end{matrix}\right)\]

Answer 7

so c? thats wat im thinking

Answer 8

i just multiply out using matrix multiplication and yes \[\left(\begin{matrix}-1 \\ -2\end{matrix}\right)\]

Answer 9

yay thanks.. wat about the first one? i got b but idk

Answer 10

is that a minus 1 or \[t _{1}\]

Answer 11

t1 i beleive

Answer 12

well we....
T;(x,y) (x+4, y+3)
T(1); (x,y) (x+4-1, y+3-1)

Answer 13

okay

Answer 14

x+3) (y+2)

Answer 15

?

Answer 16

yep

Answer 17

ohhh thank you!!!

Answer 18

welcome