Urgent!!!! Can someone please answer? Thanks!

Question

1- Which transformation represents the following rule? (x, y) —> (-x, y)

a. Reflection X axis

b. Rotation 180°

c. Reflection y=x

d. Reflection y-axis

2- To which transformation is related to <a,b>?

a. Rotation

b. Translation

c. Reflection

d. None of the above

Answer 1

Hi,

Why you make bother yourself!!!!

on the other hand, doesn't need to memories.

It is enough, make an example and watch on the coordinate plane

Example: A (2,3) -----> A' (-2,3) -2--------------0------------------2 it is obvious Reflection y-axis

A (2,3) -----> A' (2,-3) it is obvious Reflection x-axis

A (2,3) -----> A' (-2,-3) it is obvious Rotation 180°

A (2,3) -----> A' (3,2) it is obvious Reflection y=x

I hope it is useful,

Minoo

Answer 2

Juliana

For the first one, experiment.

Choose a value of (X,Y). For example x = 2 y = 1. Then plot (x,y) and (-x,y) on the same axes, so plot

(2, 1) and (-2, 1). Then using your picture try and figure it out.

For the second, I don't understand the question.

Mike