Answer:
{2, 4, 6}
Step-by-step explanation:
that is very simple.
the domain is the interval of set of the valid x (input) values.
we have been given the functional definition and the domain.
the range is the interval of set of valid y (result) values.
we only need to use the given x values and see the y values produced. that is then the range.
x = -1
y = 2×-1 + 4 = -2 + 4 = 2
x = 0
y = 2×0 + 4 = 4
x = 1
y = 2×1 + 4 = 2 + 4 = 6
so, the range is
{2, 4, 6}