For the function, f(x) =1/4 x - 2, find x if f(x) = -1. a. x=-9/4 b=x=4 b=x=1/4 x=-7/4

For this case we have a function of the form , where

We want to find the value of "x" when the function has the value of -1, that is, when

So:

We clear "x":

We add "2" to both sides of the equation:

We multiply by "4" on both sides of the equation:

So, whenthen

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.