The domain of a portion of a function is the interval of x-values we take; in this case we notice that the graph takes values in the x-axis from -2 to 4. Since the circle in the graph are hollowed this means that the domain does not include the limits, therefore the domain is:
[tex]-2The range is the portion of the function is the interval of y-values it takes. We notice that the graph takes values in that axis from -1 to 2,
therefore the range is:[tex]-1
