Question

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'?

Answer 1

Translated according to the rule (x, y) →(x + 8, y + 2) and reflected across the x-axis
Translated according to the rule (x, y) →(x + 2, y + 8) and reflected across the y-axis
Translated according to the rule (x, y) →(x + 8, y + 2) and reflected across the y-axis
Translated according to the rule (x, y) →(x + 2, y + 8) and reflected across the x-axis

Answer 2

hold on i'm uploading the pic..1 sec

Answer 3

umm sorry but i don't understand what u r saying?

Answer 4

but the figure isn't the same

Answer 5

@Directrix

Answer 6

yes :)

Answer 7

ok thanks :)
@SolomonZelman help?

Answer 8

@ganeshie8

Answer 9

@iambatman @Whitemonsterbunny17 @Luigi0210

Answer 10

How is it going over here?

Answer 11

no one is helping :(
@Nnesha

Answer 12

I think I know how to do the first part but when the reflecting begins, then we may need help. That is what I have trouble seeing sometimes.

Answer 13

i know reflecting :P i can try ._. i have the rule notes

Answer 14

Pentagon ABCDE and pentagon A'B'C'D'E' are shown on the coordinate plane below:

Let's test this option:

Translated according to the rule (x, y) →(x + 8, y + 2) and reflected across the x-axis

Answer 15

Would you look on the diagram and get the vertices of A, B, C, D, and E?

Answer 16

A (-4,5) B(-6,4) C(-6,1) D(-2,2) E(-2,4)

Answer 17

A (-4, 5) Translated according to the rule (x, y) →(x + 8, y + 2) and reflected across the x-axis

A (-4, 5) goes to A' (-4 + 8, 5 + 2) and then is reflected across the x-axis.

A( -4,5) goes to A'' (4,7) and then flips across the x-axis to become A' which has what coordinates.

I'm using A"" to be where A is before the flip to A' in option 1.

Answer 18

A isn't right i just tested it

Answer 19

So, the reflection interchanges x and y coordinates, right?

Answer 20

yes

Answer 21

So, let's test option B.

Answer 22

ok

Answer 23

A (-4, 5) goes to A"" (-2, 13) and then is reflected across the y-axis to A' (-2, -13)

Is that correct?


Translated according to the rule (x, y) →(x + 2, y + 8) and reflected across the y-axis

Answer 24

wait i think A is the correct answer look
D(-2,2)
after (x+8,y+2) it would be (6,4)
after reflection over x-axis (6,-4) @Directrix

Answer 25

But, I thought point A did not gee-haw with A'. Let me look again.

Answer 26

okay :| this is confusing..

Answer 27

On the first option, (-4.5) went to (4,7) and then flipped across the x-axis to (4, - 7)

is what I see. Is that what you see. Flipping across the x-axis keeps the x the same but changes the sign of the y. The next question is what are the coordinates of A' shown on the given diagram.

Answer 28

I am thinking that option A is holding true. We should test another point.

Answer 29

The 4 options are really just 2 options with the axis of reflection changed.

Answer 30

B to B' on the first option seems to work.

Answer 31

yay :) i'll check A to A'

Answer 32

ummm i don't think A works :(
i give up i'll just call or text my teacher to clear this to me

Answer 33

A is working for me. I went through all 5 vertices.

On which vertex did Option A fail for you?

Answer 34

point A

Answer 35

A has coordinates (-4, 5)

Option A says do this: (x, y) →(x + 8, y + 2)

So, (-4, 5) gets sent to (4, 7) using the rule. Do you agree before x-axis reflection.

Answer 36

ohhhhhh i forgot to do the y+2 :P i'm so dumb lol thanks soooooo much :D

Answer 37

So, then to flip about the x-axis keeps the x the same but changes the sign of the y.

So, (-4, 5) gets sent to (4, 7) and then to (4, - 7) which is A' on the diagram.

Answer 38

yay :D omg u r so smart ad patient too :) thanks again

Answer 39

B has coordinates (-6, 4)

Option A says do this: (x, y) →(x + 8, y + 2)

So, (-6,4) goes to (2, 6) and then reflects to (2, -6) which is B' on the given diagram.

Answer 40

C (-5, 1)

Option A says do this: (x, y) →(x + 8, y + 2)

(-5, 1) goes to (3,3) and then flips to ( 3, -3) which is C'

Answer 41

ok thank youuuuuu :D @Directrix

Answer 42

So, you follow the pattern and test point D (-2,2).

Answer 43

@Godlovesme We'll pick up when you return, okay?

Answer 44

okay :) @Directrix