Question

Which of the following functions corresponds to the piecewise-defined function below? f(x) = 2x + 4, x > -4/2 -(2x + 4), x < -4/2


a) f(x) = |2x + 4|

b)f(x) = |2x - 4|

c)f(x) = |-2x + 4|

d)f(x) = |2x + 8|

Answer 1

It's f(x) = |2x+4| since:
f(x) =  2x+4 and f(x) = -2x-4