Given f (x) = 5x-1 What is f (-2)

f (2) means multiply it by 5 and then subtract 1.

--> f (x) = 5x-1

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

--> f (2-) = - 10-1

--> f (-2) = - 11

-11

Step-by-step explanation:

Start off with the meaning of f (x) = 5x - 1

The notation is used to tell us that when a number is put in for the x on the left, it is put in every x on the right as well. The left x comes first then what to do with it on the right gives the answer. So watch it happen.

f (-2) means that wherever you see an x on the right, put in - 2 for it.

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

f (-2) = - 10 - 1

f (-2) = - 11

No matter how complicated what is on the right, the rule is the same.

f (x) = x^5 - 4x^3 - x

f (-2) = (-2) ^5 - 4 * (-2) ^3 - 2 would be how you interpret that question.

f (-2) = - 32 + 32 - 2

f (-2) = - 2