Find the range of f (x) = - 2x - 5 for the domain (-2,-1,1,2).

The domain: {-2; -1; 1; 2}

f (x) = - 2x - 5

subtitute the values of x to the equation:

f (-2) = - 2 (-2) - 5 = 4 - 5 = - 1

f (-1) = - 2 (-1) - 5 = 2 - 5 = - 3

f (1) = - 2 (1) - 5 = - 2 - 5 = - 7

f (2) = - 2 (2) - 5 = - 4 - 5 = - 9

Answer: The range: {-9; -7; -3; -1}.

We're just going to plug in these numbers

so for - 2

f (-2) = 4-5 = - 1

f (-1) = 2-5 = - 3

f (1) = - 2-5 = - 7

f (2) = - 4 - 5 = - 9

(-1,-3,-7,-9)