Answer:
Range = {0,15}
Explanation:
Domain is the set of x values for which the function is defined and the range is the set of y values corresponding to the domain.
We need to find the range of the function, given domain.
The domain is given as 3 numbers : {-3,0,5}
We have to plug in these 3 numbers individually in "x" of the function to find corresponding y values (range).
First, -3,
y = (-3)^2 -2(-3) = 15
Next, 0,
y = 0^2 - 2(0) = 0
Last, 5,
y = (5)^2 -2(5) = 15
So the range is {15,0,15}. We don't have to put the same number twice (15), so we write the range as:
Range = {0,15}