# please help me domain and range algebra 2?

algebra 2 domain and range

### 2 Answers

- ?Lv 74 weeks agoFavourite answer
9) DOMAIN = (-1, ∞) .......(Option B)

RANGE = (-∞, 5] .........(Option C)

10) DOMAIN = (0,∞) .......(Option B)

RANGE = (-∞, 3) ......(Option A)

- llafferLv 74 weeks ago
The domain is the list of every "x" in a function that results in a "y".

The range is the list of every "y" possible.

So the first one, the "x" values have an opened circle at -1 meaning that -1 isn't in the solution set but all values larger than it is.

(-1, ∞) answer B

To find the range we look at the maximum possible value then see that it goes down from there into negative infinity. That maximum is at 5 and includes that value so the range is:

(-∞, 5] answer C

------

Similar to the second one. For the domain, there is an open circle at x = 0 and it goes forever into infinity. (0, ∞) answer B.

The maximum value here is 3 and since it's also part of the circle isn't part of the range. All values less than it are. (-∞, 3) answer A.