Question

The graph below shows three functions:

Only f(x)
Both g(x) and p(x)
Both f(x) and g(x)
Only p(x)

Answer 1

@Hero

Answer 2

@iambatman

Answer 3

@jim_thompson5910

Answer 4

@amistre64

Answer 5

@zepdrix

Answer 6

So we have three functions graphed.
and we have some options.

What is the question?

Answer 7

Which function has all real numbers as its domain?

Answer 8

@zepdrix

Answer 9

Domain corresponds to your input values, your x's.

Answer 10

Which function spans aaaaaall the way to the left and right?

Answer 11

I'll tell you that it's not g(x).
Notice that g(x) goes from an x-value of around -2 up to as large as around 1 and a half

Answer 12

F(X) ?

Answer 13

OR P(X) @zepdrix

Answer 14

Well notice that it can't be g(x) because g(x) has points where it `ends`.
We need a function that keeps on going in both directions.
So which one does that? F or P?

Answer 15

P(X) i think that's the one

Answer 16

Hmm P(x) has end points as well, that's no bueno.
It doesn't extend in both directions forever and ever.

Answer 17

Ok so we elimanate anyone that has G(X) AND its not P(X) so F(X) @zepdrix

Answer 18

yay good job :O

Answer 19

thanks