Question

geometry 1 help

The point (2, –4) is reflected across the line y = –1. What are the coordinates of the image?

A.
(–5, –4)
B.
(–4, 2)
C.
(2, 2)
D.
(2, 4)

Answer 1

Hint: x-value does not change.

Answer 2

B or D

Answer 3

i go with B

Answer 4

Are you throwing darts or do you KNOW?

Answer 5

x-value does not change

Answer 6

D is possitive 4

Answer 7

Typo Revision:

Right. x-value not changing narrows it to C or D. Now what?

Answer 8

let me go with D

Answer 9

If we were reflecting across the x-axis, I would buy the "positive" argument. We're not. It's y = -1.

Answer 10

You're guessing. Don't do that. Find a way to PROVE it and KNOW it.

Answer 11

i got nothing right now

Answer 12

That's why we invented thinking and pondering.

How far is your point from y = -1?

Answer 13

i dont know

Answer 14

1

Answer 15

You need to know that. Put them on the same set of coordinate axes and look at the situation. Tell me how far it is from (2,-4) to y = -1.

Answer 16

5

Answer 17

How did you determine that? The distance from -4 to -1...

Answer 18

add lol

Answer 19

-5

Answer 20

@tkhunny

Answer 21

Distance from 1 to 0. What is it?