SOLUTION: What is the domain and range if there is a closed circle at (-4,4) and a open circle at (3,-5) thanks Write the domain and range of f using interval notation.

Question 390524: What is the domain and range if there is a closed circle at (-4,4) and a open circle at (3,-5) thanks
Write the domain and range of f using interval notation.

Answer by Edwin McCravy(20060) (Show Source): You can put this solution on YOUR website!
Suppose you have this graph:

Now look at its projection upon the x-axis, in green below:

Its projection in green upon the x-axis is its domain. So the domain
is the interval notation, taking the x-axis as a number line:
(,-4] U (3,)
The range is its projection upon the y-axis. If you extended the
graph far enough the graph will project everywhere on the y-axis, so
the range is (,). However your graph
may be different.
Edwin
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