Question

PLEASE HELP WILL GIVE MEDAL, FAN, AND TESTIMONIAL!

Answer 1

?

Answer 2

to reflect a point over the x-axis, multiply the y-coordinate by (-1)

Answer 3

?

Answer 4

what are you confused about?

Answer 5

everything

Answer 6

ok, suppose I have the point (0,1), and I want to reflect over the x-axis. All I have to do is multiply the y-coordinat by (-1), so that gives me (0,-1). Still confused?

Answer 7

(0,-1) is not an answer choice?

Answer 8

@js7474 I was just using that as an example. Now, apply the same principle to the points given in the problem.

Answer 9

ops that was meant for another post in science. sorry

Answer 10

i think the answer is A

Answer 11

the problem is asking you to reflect three points across the x-axis
to reflect a point across the x-axis, multiply the y-coordinate by (-1)

(x,y) reflected across the x-axis is (x, -y)

Answer 12

do you understand how x and y coordinates work?

Answer 13

kind of i said i think the answer is A

Answer 14

No, can you explain how you got A?

Answer 15

@js7474: Still there?

Answer 16

ya sorry

Answer 17

Right, you said you thought it was A, can you tell me why? I got a different answer.

Answer 18

well i did what you said and i got A? unless i did a mistake

Answer 19

Ok, let me try to break it down for you:

We have three points:
A(-2,-5), B(-3,5), C(3,-3)

the y coordinate of point A is -5
the y coordinate of point B is 5
the y coordinate of point C is -3

multiply each y coordinate by -1

Answer 20

-5 times -1 is 5
5 times -1 is -5
-3 times -1 is 3

is it a little more clear now?

Answer 21

ya its is

Answer 22

great, so what answer do you get now?

Answer 23

well im stuck on B and C

Answer 24

not quite! make sure to keep the x-coordinate the same each time

Answer 25

for example, we have the point A(-2,-5). After we multiply -5 by -1, we get 5, but the -2 stays the same. The reflected point is A(-2,5).

Can you repeat the same process for points B and C?

Answer 26

i did but its coming out wrong so im guessing its not B or C

Answer 27

Can you tell me what you got?

Answer 28

I mean, can you tell me what numbers you got?

Answer 29

i got (-3,2) ?

Answer 30

not quite, let's try point B. point B is B(-3,5). Can you repeat what I did for point A, and tell me what you got?

Answer 31

the x-coordinate of B is -3
the y-coordinate of B is 5
the x-coordinate stays the same
the y-coordinate gets multiplied by -1
5 times -1 is -5
so, the new point B is...?

Answer 32

Here is point P with coordinates (a, b).

Answer 33

Here is point P', the reflection of point P over the x-axis.
Notice point P' has the same x-coordinate as point P, a, and the y-coordinate is -b.