Question

someone helpp me please. equation below

Answer 1

ok just write the ratio of the length

Answer 2

you know it goes from small to large

Answer 3

so what is the length of C' to B'

Answer 4

do you have to do a formula?

Answer 5

you don't need formula, this is not complicated at all

Answer 6

what is the length from C' to B'
can you tell me

Answer 7

im bad at geometry . is it something out of 5

Answer 8

good

Answer 9

now what is the length from C to B

Answer 10

i think its 2/5

Answer 11

remember the shape goes from small to large so the top have to big bigger than the bottom

Answer 12

is the other way around the ratio is 5/2

Answer 13

oh okay i get it now. I understand. Can you help me with other math problems?

Answer 14

sure

Answer 15

what about this one?

Answer 16

ok, lets analyze the figure
first is the length of MN 2 units ?

Answer 17

you count the spaces in between right?

Answer 18

count the squares between the line

Answer 19

yes it is 2 units

Answer 20

ok, we agree

Answer 21

second paragraph the length of side M'N' is 5 units?

Answer 22

no its not 5 units

Answer 23

did you count the squares between the lines?

Answer 24

between the line

Answer 25

yes i did

Answer 26

should i count again?

Answer 27

how many squares did you count?

Answer 28

okay it is 5, i was counting the lines

Answer 29

or you can do it another way the line M' starts on 5 (look at the X axis) and ends on 10

Answer 30

okay cool. I never knew that

Answer 31

ok, then the second is true also correct?

Answer 32

no the image is bigger than the preimage

Answer 33

now lets analyze the third question, "the image is smaller than the pre-image"

Answer 34

i get confused . whats the difference

Answer 35

which one is the image and which one is the pre-image?

Answer 36

the slope of ABC is -2, the slope of ABC is -5. Therefore the correct answer is 2/5.

Answer 37

okay im confused

Answer 38

the image is the M'N'P'Q' the pre-image is MNPQ

Answer 39

okay so yeah that true

Answer 40

pre-image is the original one, the image is the one done based on the pre-image that is why have the apostrophes after the letter

Answer 41

okay I understand. What they guy said above is that true?

Answer 42

look at the picture the pre-image is the one MNPQ without apostrophes

Answer 43

okay i see now

Answer 44

so is the image smaller ??

Answer 45

yes the image is smaller

Answer 46

no the image is the big one

Answer 47

so its not true

Answer 48

ok, I want you to understand, the parallelogram with the apostrophes is a copy of the parallelogram that have the solid letters

Answer 49

the small image is what is called the pre-image

Answer 50

yes so the apostrophes is the image ?

Answer 51

does the letters of the small parallelogram have apostrophes??

Answer 52

no

Answer 53

yes that is correct

Answer 54

ok so that is not true

Answer 55

yes its not true. I understand now

Answer 56

ok, now the next paragraph if the MQ and M'Q' have the same slope?

Answer 57

do you know how to find a slope of a line

Answer 58

rise / run

Answer 59

can you use the slope formula?

Answer 60

you can, but is easier just to count the rise an run from the picture

Answer 61

you count the boxes?

Answer 62

you see the point Q
to get to point M how many lines you have to rise then how many lines you run?

Answer 63

1

Answer 64

good, you rise 1 and run 1
1/1 = 1

Answer 65

now do the same thing from Q' to M'

Answer 66

okay thats good

Answer 67

its it 2?

Answer 68

rise 2 and run 2
2/2 = 1

Answer 69

so both have a slope of 1

Answer 70

so its true?

Answer 71

yes

Answer 72

okay next one

Answer 73

what about the last one, what can you tell me

Answer 74

its not true

Answer 75

wait im wrong

Answer 76

correct, just because you go from a small image to a large one so the scale factor have to be more than 1

Answer 77

the correct would be 5/2

Answer 78

okay i thought i was wrong

Answer 79

i think its the second answer

Answer 80

what is the scale factor?

Answer 81

the scale factor is 2

Answer 82

yes because from J to K there are 4 units
and from A to B there are 2
so it is 4/2 = 2

Answer 83

yes i counted the lines

Answer 84

ok, so the choice should be simple now

Answer 85

so its the second answer

Answer 86

does the second answer makes sense ?

Answer 87

no

Answer 88

so because both figures are parallelogram that is why the scale factor is 2?

Answer 89

because the sides are parallel

Answer 90

but i think its the first answer

Answer 91

yes is the first one

Answer 92

you just told me you count the units, that is what the first one is saying

Answer 93

yes because of the rise/run