Question

What are the solutions of the system? Solve by graphing.
y = x^2 -2x-1
y = -2
I have the graphs i just can't post them here.

Answer 1

I think it is D. I'm not certain yet

Answer 2

@Ashtaroth did you graph y = -2 and y=x^2-2x-1 on paper or a microsoft paint program?

Answer 3

No, sorry i was getting breakfast

Answer 4

hmm... well y = -2 is a horizontal line and we can agree at that right? ^^

Answer 5

Yeah.

Answer 6

so all we need to so is to graph y = x^2-2x-1

Answer 7

The first one is A the second one is C and the last one is D. I've already picked B and it was wrong so i didn't bother publishing it.

Answer 8

well that means we need to pick points. let x = 0,1,2, lalalalal but it's getting late so I'll just use desmos

Answer 9

Okay

Answer 10

I think It's D.

Answer 11

I think the picture choices for c and d are the same : O

Answer 12

Alright let me check

Answer 13

They are give me a sec

Answer 14

websites not loading -_-

Answer 15

must be maintenance :/

Answer 16

Back

Answer 17

@UsukiDoll

Answer 18

k that's better.. it's really not the new c.

Answer 19

Alright, it isn't A is it? Looks a bit off.

Answer 20

not that one either.

Answer 21

So It's D. I got B wrong when i picked it.

Answer 22

it's best to graph these equations on a piece of paper or some computer software before choosing... guessing isn't a good method.

Answer 23

Thing is i'm not good at it.

Answer 24

you have to understand the material and practice a lot. I used to fail miserably at Math and intentionally failed the COMPASS portion many years back, but with a few good mentors who can explain the topics well enough and with practice you'll be able to do any math problem :).

Answer 25

Thanks.