Step-by-step explanation:
The domain is the all the possible inputs of the function.
We need to find the span of the function on the horizontal axis.
Here the function start at -8 and ends at 8.
So the domain is [-8,8].
We use brackets because -8 and 8 is defined over the domain.
The range is all the possible outputs.
We need to find the span of the function in the vertical axis
The function lowest point is -4 and the highest point is 7.
So the range is [-4,7].
To find whether this graph is a function, draw multiple vertical lines. If the lines intersect the curve more than once, then this curve is not a function
Here this curve is a function because all the lines only intersect the curve once.
So the answer is yes.
