Given f (x) = - x - 3, find f (-6)

f (-6) = 3

Step-by-step explanation:

Simply plug in - 6 as x

f (-6) = - (-6) - 3

f (-6) = 6 - 3

f (-6) = 3

f (-6) = 6 - 3 = 3

so f (-6) = 3

Step-by-step explanation:

1). if x = - 6 then f (x) looks like f (-6) = - x - 3

2). since - 6 is a negative and so is - x it becomes a positive

f (-6) = 6 - 3

3). subtract as usual

f (-6) = 3