Pentagon ABCDE and pentagon A'B'C'D'E' are shown on the coordinate plane below. Which two transformations are applied to pentagon ABCDE to create A'B'C'D'E'?

Question

anonymous · Answer

A) translated according to the rule (x, y) → (x + 8, y + 2) and reflected across the y-axis 

B) translated according to the rule (x, y) → (x + 2, Cy + 8) and reflected across the x-axis 

C) translated according to the rule (x, y) → (x + 2, y + 8) and reflected across the y-axis 

D) translated according to the rule (x, y) → (x + 8, y + 2) and reflected across the x-axis

anonymous · Answer

attachment

anonymous · Answer

is the answer C? i am not sure why, but i would like help on this :( and an explanation

anonymous · Answer

@Hero @campbell_st  @Loser66  @dan815 @Kainui

anonymous · Answer

can any of you guys please assist me?

anonymous · Answer

@whpalmer4  @zzr0ck3r

campbell_st · Answer

pick the point A   how far right do it move to get to A'..?

then how far up did A move to get to A'?

anonymous · Answer

8 to the right and 8 up ?

anonymous · Answer

its all adding in the options :(

campbell_st · Answer

opps miss read the order... 

moving A 2 right and up 8 puts it at (-3, 6) then reflecting across the y-axis will put it in the correct position A'(3, 6)

campbell_st · Answer

do your choice of C seems correct

anonymous · Answer

let me check

anonymous · Answer

no because it gives me (-3,6)

anonymous · Answer

@campbell_st

campbell_st · Answer

well if you move 1st... that's the order, then reflect in the y-axis C is the correct answer

campbell_st · Answer

when you reflect, the point has to be the same perpendicular distance from the line of reflection.

anonymous · Answer

so basically the subtraction sign is the opposite when i reflect it over the y axis?

anonymous · Answer

@campbell_st

campbell_st · Answer

well my mistake is I didn't read the order of the 2 step transformation. 

Step 1.  translate ... move of slide to a new position. 

Step 2 reflect... flip across a line... 


so be moving 2 right and up 8 you can slide the polygon into a position so it can be reflected into its new position.

campbell_st · Answer

sorry to confuse ou as you had identified the correct answer... before I started

anonymous · Answer

oh, lol its okay an  thank you for the help :) @campbell_st