Question

Which scale factors produce a contraction under a dilation of the original image?

Select each correct answer.

−1.8

−0.8

0.8

1.8

Answer 1

There is no image for this, I wonder why myself. There also is more than one answer. @Vocaloid

Answer 2

take the absolute value of each answer choice (basically, if there is a negative sign remove the negative sign) and choose the two answer choices less than 1

Answer 3

Okie

Answer 4

So basically its C and D, right?

Answer 5

1.8 is not less than 1

Answer 6

So then A,B, and C

Answer 7

Or just C

Answer 8

when you take the absolute value of -1.8 you get 1.8 which is not less than 1.

Answer 9

Ohhh, got it

Answer 10

Can you help me with 3 more please?

Answer 11

sure.

Answer 12

This time its Expansion
Which scale factors produce a expansion under a dilation of the original image?

Select each correct answer.

−8

−0.7

0.8

7

Answer 13

select the answer choices with an an absolute value greater than 1

Answer 14

A and D

Answer 15

well done

Answer 16

Thanks, okay, this one finally has a image, http://prntscr.com/hpcsmh

Answer 17

the new shape is 3 times as big as the old shape

making the dilation factor 3

Answer 18

*** that is to say the side lengths are 3 times as big, not the area

Answer 19

Oh, so how do I determine 3 cubits larger?

Answer 20

if you compare AB and A'B' (corresponding sides) AB is 1 unit long and A'B' is 3 units long

Answer 21

So the scale factor is 1, since the new shape is bigger?

Answer 22

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Vocaloid
the new shape is 3 times as big as the old shape

making the dilation factor ~~~ 3 ~~~
\(\color{#0cbb34}{\text{End of Quote}}\)

Answer 23

Ohhh

Answer 24

Last but not least http://prntscr.com/hpcu8r

Answer 25

the new triangle gets reflected in the opposite direction so the scale dilation factor must be negative

the new triangle is the blue one, which is ~3~ times as big as the old triangle

put these together to get -3 = your ans

Answer 26

Okie, thanks so much for your help. It really helped