Question

HEELLPPP!!!

Answer 1

Does it give you the coordinates of each point? It seems like each point doesn't have whole number coordinates (which means we'd have to make estimates)

Answer 2

Thats what my questions asked. So I guess we will have to...

Answer 3

so what's one possibility for point A? where is A located right now?

Answer 4

-3, 1

Answer 5

yeah that's possible I guess

Answer 6

A = (-3,1)

Answer 7

to do the scaling, we multiply all its coordinates by 4

Answer 8

A = (-3,1)

A' = (-3*4, 1*4)
A' = (-12, 4)

Answer 9

do the same for B, C and D

Answer 10

I agree with that

Answer 11

now apply the scale factor

Answer 12

Correct?

Answer 13

you are correct

Answer 14

And thats it?

Answer 15

yep you just multiply every coordinate by 4 to get your new points A', B', C' and D'

Answer 16

Isn't it a translation image of the other? @jim_thompson5910

Answer 17

yeah you shifted it up or down (depending on which one you picked to start with)

Answer 18

So I choose to start with the top one.
All I explain is that you can shift it down? Is there another explanation? @jim_thompson5910

Answer 19

Yeah if you start with the top figure, you shift it down some number of units.

Answer 20

Thats it for that question? @jim_thompson5910

Answer 21

yes

Answer 22

The dilation is a reduction, correct? @jim_thompson5910

Answer 23

yes because the dashed image is smaller

Answer 24

"Find the scale factor of the dilation. "

Answer 25

hint: focus on the red points

Answer 26

So its x2?

Answer 27

@jim_thompson5910

Answer 28

which red points did I mark?

Answer 29

The tips of the triangles.

Answer 30

what are the coordinates?

Answer 31

The little triangle (-1,0)

The big triangle (-6,0)

Answer 32

remember the tick marks are going by 2 (not 1)

Answer 33

So x5?

Answer 34

you made an error with the little triangle

Answer 35

the tick marks are going by 2 (not 1)

Answer 36

Oop so its x4

Answer 37

The little triangle (-1,0) ... incorrect

The big triangle (-6,0) ... correct

Answer 38

The little triangle (-2,0)

Answer 39

So the scale factor would be x4

Answer 40

you go from (-2,0) to (-6,0)

fill in the blank

-2 times _______ = -6

Answer 41

-2 times 4 = -6

Answer 42

-2 times 4 is not -6

Answer 43

you might be thinking of 2 + 4 = 6

Answer 44

Oops I meant 3

Answer 45

yep so the scale factor is 3

Answer 46

oops no

Answer 47

1/3 because the larger figure is getting smaller

Answer 48

Where did you get 1/3 from?

Answer 49

well you multiply the coordinates of (-6,0) by 1/3 to get (-2,0)

Answer 50

since we go from big to small

Answer 51

going in reverse is x 3 (flip the fraction 1/3 to get 3)

Answer 52

So the scale factor is not 3?

Answer 53

if it was 3, then the dashed image would be larger than the original

Answer 54

So the scale factor is 1/3

Answer 55

@jim_thompson5910 ?

Answer 56

yep 1/3