## anonymous one year ago REALLY NEED SOMEONE TO HELP ME!!!! Which sequence of transformations was performed on figure PQRS to produce figure PꞌꞌQꞌꞌRꞌꞌSꞌꞌ? A. PQRS was reflected across the y-axis and then rotated 90° counterclockwise about the origin. B. PQRS was reflected across the x-axis and then rotated 90° counterclockwise about the origin. C. PQRS was translated 5 units left and then reflected across the x-axis. D. PQRS was rotated 180° clockwise around the origin and then translated 1 unit left.

1. anonymous
2. anonymous

@brucebaner @Destinymasha @Phebe @pooja195 @sleepyjess

3. anonymous

i reallllllllllllly need help

4. anonymous

@Nnesha ? any ideas?

5. Nnesha

hm not sure..

6. anonymous

to me, like none work

7. Nnesha

do you know the definition of 90 counterclockwise and 180 , 90 clockwise ?

8. anonymous

uhm i think so

9. Nnesha

90 counterclockwise $\large\rm (x,y) ----> (-y,x)$ 90 clockwise $\large\rm (x,y)----->(y,-x)$ 180 clockwise $\large\rm (x,y)---->(-x,-y)$

10. anonymous

okay yeah thats what i thought

11. anonymous

sooooo not D?

12. Nnesha

thinking

13. anonymous

because p=1,2 and p"=-2,-1

14. Nnesha

gimme a sec i mean 5 mint

15. anonymous

okay

16. anonymous

i really dont think its C so im guessing A or B

17. Nnesha

yah i guess i'm working 'n it

18. anonymous

Im thinking A, hbu?

19. Nnesha

1 mint :3

20. anonymous

it was A, thanks for explaining the 90' and 180" things for me =D your a lifesaver!!!

21. Nnesha

yea you are right sorry for late i was did something wrong and here is an explanation for A so first we have to rotate across the y -axis to do that we have to y -coordinate stays same like in original image and change the sign of x coordinate so in the original image P (1,2) Q(3,1) R(3,3) S(1,4) rotate over y-axis like i said y values stay same change sign of x coordinate P(-1,2) Q(-3,1) R(-3,3) S(-1,4)|dw:1434320428977:dw| now we have to use those definitions

22. Nnesha

|dw:1434320615696:dw| over y-axis

23. Nnesha

after reflection P(-1,2) P''(-2,-1) Q(-3,1) Q''(-1,-3) R(-3,3) R''(-3,-3) S(-1,4) S''(-4,-1) $\large\rm 90-countercloskwise (x,y)---->(-y,x)$ so yeah that's how A is right

24. anonymous

Thanks so much for your time =)

25. Nnesha

my pleasure :-)