How would we go about finding the values in each ordered pair from the graph?
Range: -8, -5, -2, 1, 5, 7 Domain: -2, -1, 0, 1, 2, 3 Type of Domain: Discrete, see solution.
Practice makes perfect
To find the x-coordinate of a point, we move vertically until we hit the x-axis. Similarly, to find the y-coordinate, we move horizontally until we hit the y-axis.
Now let's list the ordered pairs that we found.
(- 2,7), (- 1,5), (0,1), (1,- 2), (2,- 5), (3,- 8)
The domain of a function is found by listing the relation's x-values. The range is found by listing the relation's y-values.
Domain:& {- 2,- 1,0,1,2,3 }
Range:& {7,5,1,- 2,- 5,- 8 }
Since the given function is a set of disconnected points, we can say that the function is discrete.
