Question

What scale factor was used to dilate rectangle WXYZ to form rectangle W′X′Y′Z′?
A. −5
B. −1/2
C. 1/2 <---
D. 5

Answer 1

Look at your solutions and try each one, multiply the original by ones given in your solution and if it gives you the following, that's your answer.

Once again, dilation (x*n,y*n), where n is the constant.

Answer 2

@iambatman So I'm wrong?

Answer 3

Idk, I didn't check, believe in yourself!

Answer 4

Can you check? I really wanna know if I'm right. :) @iambatman @mathstudent55 @mathslover

Answer 5

@iambatman @mathslover

Answer 6

@Hero

Answer 7

@ganeshie8

Answer 8

Take one vertex, lets take X :
look at the given graph - can you tell the coordinates of X ?

Answer 9

Does the Y axis or the X axis go first? @ganeshie8

Answer 10

always "x" is the first : (x, y)

Answer 11

9,-2?

Answer 12

Nope

Answer 13

(x,y) not (y,x)

Answer 14

Woops I mixed the two up! My eye sight is bad, and it's 3 am herwe. :) -2,9?

Answer 15

@iambatman

Answer 16

Yes, that's right

Answer 17

Wait so C is right? @iambatman

Answer 18

@iambatman @Hero

Answer 19

@zepdrix @ParthKohli @Preetha @yrelhan4 @Luigi0210 @paki @mathslover

Answer 20

nope, answer is B

Answer 21

Oh. :) Thank you!!! :)

Answer 22

X = (-2, 9)
X' = (1, -4.5)

Answer 23

scale factor = 1/(-2) = -1/2

Answer 24

when the graph dilates parallel to the y- axis the S.F ( scale factor) is "a"
when the graph dilates parallel to the x-axis the the S.F is \[\frac{ 1 }{ a}\]

Answer 25

scale factor is -1/2 in each x-axis as well as y-axis

Answer 26

look at the signs .. where its positive in wxyz , in dilated its negative in all 8 coordinates.. and also all coordinates are sclaed with 1/2 , u can match themm .. so scale factor is -1/2 lol

Answer 27

that was a general formula Mr, @khurramshahzad. I in directly answered her/his question.
Infact i didnt look at their coordinates.

Answer 28

oh its no general formula.. the question is .. u said for vertical sclae factor is a.. n for horizontal is 1/a,..... what ever a is .. my point is for vertical and horizontal dilation in this case scale factor is same

Answer 29

""""in this case""""
@khurramshahzad im not answering their question. i just wrote the formula WITHOUT looking at the COORDINATES.

anyhow dw abt it

Answer 30

hahaha relax Ms.. y so exciting :P .. ok may b u r right .. i dnt hv idea wats ur point actually ..