Question

Determine which ordered pair is a solution of y = x2–2.
(5, 21), (–5, 24), (–1, –1), (–2, 6)

Answer 1

Are you sure those answer choices are right?

Answer 2

yes, but there are also these
(–2, 6)
(5, 21)
(–1, –1)
(–5, 24)

Answer 3

but im pretty sure they're the same...

Answer 4

None of those answers are the correct choice. If the last choice were (-2,-6) it would work.

Answer 5

it was (-1,-1)

Answer 6

Maybe I am looking at it wrong, I was thinking PEMDAS required you to do the multiplication of X*2 first. and then subtract the 2 from that.

Answer 7

You might want to check that again. I can't find any way that (-1,-1) works.

Answer 8

If you did (-1*2)-2 you would get -1=0
if you did -1^2-2 you would get -1=-3
if you did -1*(2-2) you would get -1=0
so any way you look at it (right or wrong) (-1,-1) does not work.