clbrabant99 clbrabant99
  • 21-05-2018
  • Mathematics
contestada

Let f(x) = 12 over the quantity of 4 x + 2Find f(−1).

Respuesta :

jimthompson5910 jimthompson5910
  • 21-05-2018
The function is
f(x) = 12/(4x+2)
Note the use of parenthesis to indicate that 12 is dividing over all of "4x+2"

Plug in x = -1 and use PEMDAS to simplify
f(x) = 12/(4x+2)
f(-1) = 12/(4(-1)+2) ... every x is replaced with -1
f(-1) = 12/(-4+2)
f(-1) = 12/(-2)
f(-1) = -6

Answer: -6
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