Question

I need help in Transformations II help!!

Answer 1

legendarynikki
A triangle with vertices at (1, 2), (–1, –6) and (7, –2) is translated five units to the left and 7 units upward. The coordinates of the translated triangle are:
Select one:
a. (6, 9), (4, 1) and (12, 5)
b. (–4, –5), (–6, –13) and (2, –9)
c. (6, –5), (4, –13) and (12, –9)
d. (–4, 9), (–6, 1) and (2, 5)

A convex polygon which has rotational symmetry of 180° must have which characteristic?
Select one:
a. At least one line of symmetry
b. All side lengths equal
c. An even number of sides
d. All angles equal

Answer 2

I think 2 is C

Answer 3

For each coordinate is hanged as follows
x ---> x -5
and
y-----> y + 7

Answer 4

okay??

Answer 5

* changed ( question A)

Answer 6

i dont get it

Answer 7

(x , y) changes to (x-5, y+7)

Answer 8

so for instance the point
(0,5) is transformed to (5,12)

Answer 9

um okay

Answer 10

so in QUestion A what is the point (1,2) transformed to?

Answer 11

i dont know

Answer 12

sorry i made a mistake
(0,5) becomes (0-5, 5+7) = (-5,12)

Answer 13

(1, 2)-- > ( 1-5, 2 + 7) = (-4, 9)

Answer 14

-6,1

Answer 15

what point is that (-6,1)???

Answer 16

i dont know

Answer 17

im trying to figure this out but it makes no sense to me

Answer 18

OK we have one of the vertices (1,2) in question 1

a move of 5 to the left transforms the x value (1) to 1 - 5 = -4
Moving to the left is negative movement

OK?

Answer 19

ok

Answer 20

A movement up or down changes the value of the y coordinate
so the 2 in (1,2) becomes 2 + 7 = 9 ( that is a move of 7 units up the graph)

Answer 21

so ( 1 , 2) becomes (-4 , 9)

Answer 22

oh okay

Answer 23

So if you look at the options in question A you'll see which one is correct

Answer 24

D?

Answer 25

right

Answer 26

is my second question right?

Answer 27

A convex polygon which has rotational symmetry of 180° must have which characteristic?
Select one:
a. At least one line of symmetry
b. All side lengths equal
c. An even number of sides
d. All angles equal


i put C

Answer 28

to be honest I'm not sure about that one.

Answer 29

a rectangle has rotational symmetry of 180 so I think C is right.

Answer 30

yea i'm pretty sure about that. Not 100% though..

Answer 31

thats the best i can do with that one.