Question

What's Domain and range of...

Answer 1

y=5
y=x^2

Answer 2

So if the range is the span of the X's, then you have to look at how far the graph goes to the left and to the right.
And if we look at that graph, there's no obvious "stopping place" on the left or right, right?

Answer 3

Right

Answer 4

So that's kinda like it's stretching on to infinity on the left and right. But in math we can't just say the range is from the left infinity to the right infinity. We've gotta use numbers.

Answer 5

ok

Answer 6

The left side of the graph in this case is the negative side, and the right is the positive. So that helps us.
If we know that, we can say it goes from \[-\] to \[+\]

Answer 7

That didn't turn out right. I mean that the range is from -(infinity) to (infinity).

Answer 8

Make sense?

Answer 9

yes

Answer 10

So domain is \[(0, \infty]\] ?

Answer 11

You got it. Just one thing.

Answer 12

It would be a [ and then ), I believe.

Answer 13

Alright, thanks :)

Answer 14

You're welcome.