Answer:
Step-by-step explanation:
(a)
The domain of a function denotes the upper and lower limits of the x co-ordinate values, over which the function is defined.
Here, the x co-ordinates over which the function is defined are from -9 to 7.
Hence ,the domain is: -9 ≤ x ≤ 7
(b)
The range of a function denotes the upper and lower limits of the y co-ordinate values, which the function gives.
Here, the y co-ordinates over which the function gives are from -6 to 4.
Hence ,the domain is: -6 ≤ y ≤ 4
