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Mathematics 24 Online
OpenStudy (shaleiah):

Status: Pending.

OpenStudy (michele_laino):

please where is the question?

OpenStudy (shaleiah):

OpenStudy (shaleiah):

"Graph the image of the following rotation"

OpenStudy (anonymous):

hey

OpenStudy (shaleiah):

hello, do you know geometry well?

OpenStudy (anonymous):

not really

OpenStudy (michele_laino):

please wait I'm doing some computations

OpenStudy (michele_laino):

hint: after a rotation of 180 degrees around the origin of the reference system, both coordinates change sign, namely, if the origional coordinates are \((x,y)\), then the new coordinates are \((-x,-y)\)

OpenStudy (michele_laino):

original*

OpenStudy (michele_laino):

for example, we have: \(P=(3,1)\), so after rotation, we get: \(P'=(-3,-1)\)

OpenStudy (michele_laino):

similarly for other points

OpenStudy (shaleiah):

okay

OpenStudy (shaleiah):

Is the correct pre-image and after image of the rotation?

OpenStudy (shaleiah):

@Michele_Laino

OpenStudy (michele_laino):

please retry and label each point

OpenStudy (shaleiah):

@MysticFury

OpenStudy (shaleiah):

@Daniellelovee

OpenStudy (daniellelovee):

did you read what michele said at all?

OpenStudy (shaleiah):

Yes, to label each point :)

OpenStudy (daniellelovee):

yes that too but I mostly meant about 3,1 becoming -3,-1

OpenStudy (shaleiah):

here's what I'm using: https://app.geogebra.org/#geometry

OpenStudy (daniellelovee):

yes I know I'm familiar with geogebra but you are noty getting it, you simply have to do the opposites of every point

OpenStudy (shaleiah):

Okay, I'm going to re-do the graph.

OpenStudy (shaleiah):

OpenStudy (daniellelovee):

0,5 and -1,3 are wrong sorry

OpenStudy (anonymous):

hello

OpenStudy (shaleiah):

I'm giving up...

OpenStudy (daniellelovee):

lol don't is not so difficult trust me

OpenStudy (michele_laino):

here are the image of the provided points: \[\begin{gathered} P \to P' = \left( { - 3, - 1} \right) \hfill \\ E \to E' = \left( { - 4, - 4} \right) \hfill \\ C \to C' = \left( {0, - 5} \right) \hfill \\ D \to D' = \left( {1, - 3} \right) \hfill \\ \end{gathered} \]

OpenStudy (michele_laino):

images*

OpenStudy (michele_laino):

please connect those points in the given order @shaleiah

OpenStudy (shaleiah):

Alright, hang on.

OpenStudy (shaleiah):

Here are the prime points:

OpenStudy (michele_laino):

that's right!

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