Question

can some one please help me?

Answer 1

Welcome to Openstudy! please state your question?

Answer 2

thanks.
Triangle PQR is transformed to triangle P'Q'R'. Triangle PQR has vertices P(3, −6), Q(0, 9), and R(−3, 0). Triangle P'Q'R' has vertices P'(1, −2), Q'(0, 3), and R'(−1, 0).

Plot triangles PQR and P'Q'R' on your own coordinate grid.

Part A: What is the scale factor of the dilation that transforms triangle PQR to triangle P'Q'R'? Explain your answer. (4 points)

Part B: Write the coordinates of triangle P"Q"R" obtained after P'Q'R' is reflected about the y-axis. (4 points)

Part C: Are the two triangles PQR and P''Q''R'' congruent? Explain your answer. (2 points)

Answer 3

I will be right back, i need to finish helping another student.

Answer 4

okay thank you @whatdoesthismean

Answer 5

This link are shortcuts to reflections and rotations. Memorize them, and it will make reflections and rotations much simpler.

http://www.regentsprep.org/regents/math/geometry/gt5/RuleSheet.pdf

Answer 6

just remember ALL rotations are counterclockwise unless said otherwise, so do not get confused.

Answer 7

For the first one, it will make it easier if you graphed it using a online calculator or something.

Answer 8

I prefer desmos but mathway is fine too.

Answer 9

is that a website @whatdoesthismean

Answer 10

yes, use Mathway.

Answer 11

Sorry, unfortunately i have to go. Hopefully somebody else can successfully explain it all to you. :)

Answer 12

okay thank you @whatdoesthismean

Answer 13

P(3, -6)

P'(1, -2)

what are we doing to each coordinate to go from P to P' ?

Answer 14

im really not sure @jim_thompson5910

Answer 15

solve for k

3k = 1
-6k = -2

Answer 16

from 3k=1 I got 0.33 repeating @jim_thompson5910

Answer 17

k = 1/3 works as well

Answer 18

k = 1/3 means that you are multiplying each coordinate by 1/3

or dividing each coordinate by 3

Answer 19

do you see how that works?

Answer 20

yes kinda. im really lost though and I cant figure it out.@jim_thompson5910 hey can we make a deal