please help me domain and range algebra 2?
algebra 2 domain and range
- ?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.