Question

Determine the range of the following graph:

12
11
10
9
8
7
6
5
4
3
2
-12-11-10 -9 -8 -7 -6 -5 -4 -3 -2 -1
1 2 3 4 5 6 7 8 9 10 11 12
- 2
-9
-10
Can somebody help me with this question ? T.i.a (:

Answer 1

Explanation:

Range is all possible y values a function can have. Look at the y axis. So let find the max/ min y value the function can have. The max y value is 1, and the minimum y value is -4. All the x Intervals fall between -4, and 1. Since we have solid dot we include the -4 and 1.

So the notation for this is

`- 4 \leqslant y \leqslant 1`

or

[-4,1]