Question

Step by step. he do you write a rule to describe a transformation? Such as 1 up and 1 right.....or 3 down and 1 right

Answer 1

http://openstudy.com/study#/updates/540b4d79e4b081860be4fb79

i spose i was taking to long?

Answer 2

Nah it's fine

Answer 3

up and down are y movements

left and right are x movements

just add/subtract as needed

Answer 4

So how do i tell if the numbers are positive or negative in the coordinate?

Answer 5

lets say T maps the point (x,y) to a new point (f(x),f(y)) such that we go up by 4 and left by 3

then f(x) = x-3
and f(y) = y+4

Answer 6

in general, up and right are positive directions
down and left are negative directions

Answer 7

if you can draw a 'graph' the y axis is up and down, the x axis is left and right, and they cross at the zeros

Answer 8

Oh ok

Answer 9

Had go find the rule for 1 up and 1 right and i put (1 -1) and the teacher put (-1 1)....I need a practice one.

Answer 10

yeah, x first; the y

Answer 11

but 1 up and 1 right are both postive directions so even if you swapped them they are the same

Answer 12

T:(x,y) to (x+1,y+1)

Answer 13

Oh ok

Answer 14

So I would put the left and right and then the Up and down?

Answer 15

So if i was doing 3 down and one right which number would I put first?

Answer 16

I got it...it would be (1-3)?