EmpyrealBlue
EmpyrealBlue EmpyrealBlue
  • 02-09-2016
  • Mathematics
contestada

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

Respuesta :

SyntaxError
SyntaxError SyntaxError
  • 02-09-2016
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)
Answer Link
dalendrk
dalendrk dalendrk
  • 02-09-2016
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}.
Answer Link

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