Question

Need help with scale factor

Answer 1

1111/2500 scale thats surprisingly as simple as it gets lol

Answer 2

how long is segment AB?

Answer 3

So it would be 6?

Answer 4

how long is DE?

Answer 5

9?

Answer 6

now divide DE by AB

Answer 7

DE/AB = 9/6 = 3/2

So the scale factor as a fraction is 3/2

The scale factor as a decimal number is 1.5 (since 3/2 = 1.5)

Answer 8

This basically means DE is 1.5 times longer than AB

Answer 9

The same will be true for the other pairs of corresponding sides.

Answer 10

So what would I do to find the scale factor of all 3? abc into def?

Answer 11

you just need to use one pair of corresponding sides to find the scale factor

Answer 12

you don't need to use all 3 sides

Answer 13

this is assuming the two triangles are similar

Answer 14

Okay, sorry first time doing this. Well they are similar so would that 1.5 come into play to find the answer of the q?

Answer 15

that answers part a), yes

Answer 16

for part b) you can divide each coordinate of points D, E, F by 3 to get the new points G, H, I

that will let you apply the scale factor of 1/3

Answer 17

So for instance, E is the point (6,6)

Divide each coordinate by 3 to get 6/3 = 2 and 6/3 = 2

Therefore, E(6,6) ----> H(2,2)

Answer 18

well F(9,3) ----> I(3,1)

which is what I think you meant to say

Answer 19

and D(6,-3) ----> G(2,-1)

Answer 20

So my last post was correct?

Answer 21

yes but F isn't used, an uppercase i is used instead

Answer 22

whoops

Answer 23

also, don't forget to surround the ordered pair in parenthesis

Answer 24

it's not G = 2,-1 it should be G = (2,-1)

Answer 25

no, both are used

Answer 26

(2,-1) means x = 2, y = -1

Answer 27

so you start at the origin (0,0)

Answer 28

then you go 2 units to the right

and then 1 unit down to land on (2,-1)

Answer 29

x handles how much you go left/right
y handles how much you go up/down

and you always start at the origin

Answer 30

if x is positive, you go right
if x is negative, you go left

if y is positive, you go up
if y is negative, you go down

Answer 31

it looks like the origin is way on the left, which is bizarre

Answer 32

where the darker lines (which look like the x and y axis) intersect

Answer 33

That's just saying that point C is at the location (6,2)

Answer 34

You can either write that as C = (6,2) or you can say C(6,2)

Answer 35

Don't know where 0,0 is :/

Answer 36

Thought it was that line that's more on the right side

Answer 37

Do you see the darker lines (the x and y axis)?

Answer 38

the x and y axis always intersect at the origin

Answer 39

Ah okay so the 0,0 is actually on the y line? that's strange..

Answer 40

and the x line too

Answer 41

it's where the two axis cross

Answer 42

so it's off to the left for some reason

Answer 43

probably so they can fit more of the positive points in the picture

Answer 44

Okidokie gonna graph this real quick then we'll see if I'm correct

Answer 45

alright

Answer 46

uploading now

Answer 47

ok, post when ready

Answer 48

Ok everything looks good but point G

Answer 49

Yep that's what I was worried about, erased it so many times

Answer 50

G is G = (2,-1) not (2,0)

Answer 51

So right where G is right now I literally just moved it down one?

Answer 52

move*

Answer 53

Think that's right, think I got it

Answer 54

yes, move G one unit down to make it land on (2,-1) and that's all you need to fix

Answer 55

Gotta really thank you, I really appreciate you dedicating so much time to help me was a huge help

Answer 56

I'm glad it's clicking now, yw