Question

HELP!!
Write a rule for the translation of point A to point A' and use that rule to locate points B' and C'
A(-1,-2) A'(-4 0)
B(1 2)
C(3 -1)

Answer 1

I think its x+2 y-4

Answer 2

for translation, the points all move the same distance and the same direction. First we determine how much distance did these points move by. so A(-1,-2) moves to A'(-4 0)
therefore wat is the change in the x and y value of point A?

Answer 3

x+2 y-4

Answer 4

no, lets look at the x value for A and A' which are -1 and -4 respectfully.

Answer 5

jki fund it lol

Answer 6

oh so isit x-4 y+2

Answer 7

cool :) now wat was the change in A's x value?

Answer 8

no

Answer 9

ill stop jumpin ahead

Answer 10

ok wat do u do to -1 to get -4?

Answer 11

move over4 from A

Answer 12

that would be so if A's x value was 0 cause 0 - 4 = -4

Answer 13

oh so u move to the left 4 and up2

Answer 14

ur close, Pt A moves up 2 and to the left but doesnt move to the left by 4 but by 3

Answer 15

oh I just counted wrong lol so then would it be x-3 y+2?

Answer 16

yea

Answer 17

and then use that to get B' and C'

Answer 18

yes, so do that and ill let u know if ur right :)

Answer 19

kk I got B'=(-2 5) C'(0 2)....oh ya I have a cople more questions for this one if you wouldn't mind helping on them when I get this one done that would be cool of u :)

Answer 20

no,forpt B(1 2) what you do is minus -3 from B's x value 1, and add 2 to B's y value 2.
do over C as well, and sure id love to help :)

Answer 21

coo ok thanks

Answer 22

B'=(-2 4) C'(0 1)

Answer 23

wait my bad it's right

Answer 24

so next question :)

Answer 25

ok I was gonna say lol then I have to wite a rule to translate A'B'C' back to ABC but would that just be x+3 y-2

Answer 26

yes :)

Answer 27

nex question:

Answer 28

D'(5 -2) E'(7 -1)
the image of (xy) (x+1)(y-5) find DE

Answer 29

and write the vector that translates DE to D'E'

Answer 30

@HawkCrimson

Answer 31

brb

Answer 32

kkk

Answer 33

back

Answer 34

cool u got the questions I typed

Answer 35

wat's (xy) (x+1)(y-5)?

Answer 36

oh I figured them ones out lol

Answer 37

i still dont understand :s

Answer 38

it gives you how to find D'E' u just substitute add wit subtraction and get DC so its (x-1)(y+5) instead of (x+1)(y-5)

Answer 39

A golfer teein off on an easy par 3 hole from point A hits the ball to point B the second stroke moves the ball from point B to C(on the green) ten feet away from the hole(point D(4 3)/. Write the component for AB BC and AD

Answer 40

do I just use the distance formula

Answer 41

u have the coordinates of A, B and C?

Answer 42

yes

Answer 43

i think so.. im not sure wat the word component means

Answer 44

if by component they mean the length then yes

Answer 45

yea I think so give me asec to find and solve and ill let u kno what I get

Answer 46

wat's the formula again? lol i forgot :P

Answer 47

AB=(2-x1)^2+(y2-y1)^2 all over sqrt

Answer 48

\[AB=\sqrt{(x2-x1)^{2}+(y2-y1)^{2}}\]

Answer 49

ok cool :) now do it and ill tell u if ur right :)

Answer 50

ok for AB=7.21 Bc+3.31 Ad+8.54

Answer 51

u have to give me the coordes for A, B and C for me to check ur work

Answer 52

theyr at the verytop in my first question

Answer 53

a(-1 -2)b(1 2)c(3 -1) d(4 3)

Answer 54

say it again cause i dont see it..

Answer 55

cool

Answer 56

crap, brb

Answer 57

kkk

Answer 58

back

Answer 59

doing it now

Answer 60

cool cool di du get the answers

Answer 61

AB = 4.47

Answer 62

\[\sqrt{(1-(-1))^{2}+(2-(-2))^{2}}\]

Answer 63

show me ur working for AB

Answer 64

I will

Answer 65

\[\sqrt{(-2-4)^{2}+(2-0)^{2}}\]
\[\sqrt{36+15}\]
\[\sqrt{52}or7.21\]

Answer 66

I did it wrong

Answer 67

:) correct it and gud job!

Answer 68

gud job for seeing that something is wrong

Answer 69

ok so now I got AB=4.47 BC=3.61 and AD=7.07

Answer 70

i only did AB and ur answer is right :) ill now do BC and AD

Answer 71

I did I gave u my answers above^^^

Answer 72

BC is correct as well :)

Answer 73

this is like the only thing im good at lol

Answer 74

AD is correct :) so all ur answer r correct :D

Answer 75

ihave 3 mor questins lol next question:
if the golfer makes a ten foot putt from from point C into the hole (point D)the how far did the ball trave en route from A to B to C to D.(hint:use the paythagoren troples 3,4,5 5,12,13,and 8,15,17 and a scale of 1 unit=10feet)

Answer 76

jk only 2 :)

Answer 77

haha cool :P

Answer 78

... i cannt picture the triangle here. wat i see is this