Question

HELP ME PLEASEEE?!?!?!?!?? FAN & MEDAL!!


Polygon ABCD is dilated, rotated, and translated to form polygon A′B′C′D′. The endpoints of AB are at (0, -7) and (8, 8), and the endpoints of A'B' are at (6, -6) and (2, 1.5). What is the scale factor of the dilation?

Answer 1

@CO_oLBoY

Answer 2

sorry i don't know how to solve this one

Answer 3

@ganeshie8 @thomaster @amistre64 @ParthKohli

Answer 4

xp

Answer 5

assuming a dilation at the origin

the dilation factor d, dilates a point (x,y) to the point (dx,dy)

Answer 6

but as i see it, we are given the end point after everything else is done ... so we need to rely on length here

Answer 7

what is the distance of each line segment: AB and A'B'?

Answer 8

The scale factor of this dilation is 12. It is the ratio of the length of A'B' to the length of AB. soo... yeahh.

Answer 9

yep length ratios :)

Answer 10

(0, -7) and (8, 8) ::: (6, -6) and (2, 1.5)
+7 +7 -6 6 -6 6
-------------- ----------------
8,15 4,7.5

sqrt(8^2+15^2) = dsqrt(4^2+7.5^2)


sqrt(8^2+15^2)
-------------- = d
sqrt(4^2+7.5^2)

Answer 11

http://www.wolframalpha.com/input/?i=sqrt%288%5E2%2B15%5E2%29%2Fsqrt%284%5E2%2B7.5%5E2%29

im not getting 12 tho

Answer 12

Ohh.. hmm..

Answer 13

hmm, and i did a slight error

its spose to be dA = A' not A = dA' so my fraction is upside down

Answer 14

A' to A is 2 ... but we want A to A' ... so flip it to get 1/2

Answer 15

yeah
AB = 17
A'B' = 8.5 = 17/2

Answer 16

okay! Hahaa so is that the answer?

Answer 17

you should be able to deduce it from the postings ...

tell me what you have determined the solution to be