Question

Can someone please explain this to me I don't understand questions like these.....

Quadrilateral ABCD has vertices at A(-2,-1), B(-4,-7), C(-9,-3), and D(-8,-6). It is reflected across the x-axis. What are the new coordinates? Explain.

Answer 1

@waterineyes

Answer 2

honestly I don't know how to tackle geometry in a great way..

But I can do something for you, just wait...

Answer 3

@.Sam. @AravindG @ganeshie8 can you please help here??

Answer 4

Okay did you try drawing a rough figure?

Answer 5

Drawing a figure always helps to visualize and understand the question better.

Answer 6

Graph here

Answer 7

Now we are gonna reflect it along x axis ..Think of it like x axis is a mirror

Answer 8

so how do I reflect it on the x axis?

Answer 9

look at each point and move it to a place such that we reproduce the original figure's image

Answer 10

for eg the point (-2,-1) when reflected becomes (2,1)

Answer 11

similarly do for other points

Answer 12

@AravindG, it is only reflected across the x-axis, not the origin.

Answer 13

So would (-4,-7) be (4,7)

Answer 14

how do you do that

Answer 15

I mean, you only change the y-coordinate

Answer 16

It's pretty easy. You just change the y-coordinate and leave the x-coordinate the same.

Answer 17

yeah how do you change the y-coordinate? could you give an example

Answer 18

For instance, if I had to reflect the point (-7, -6) over the x-axis, the reflected point becomes (-7, 6)

Answer 19

It's easier to see with graph paper

Answer 20

So would (-4,-7) become (-4,7)?

Answer 21

Yes

Answer 22

Here's an example of what it will look like:
https://www.desmos.com/calculator/c0huyy1mwn

Answer 23

That's an example of what would happen if you reflected a rectangle over the x-axis.

Answer 24

okay thank you (: