Question

The equation below describes a linear function. y=−2(x+1)+4 The range of the function is {−4,−2,4} . What is the domain of the function

Answer 1

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Answer:

  {-1, 2, 3}

Step-by-step explanation:

We need to find the values of x that correspond to these y-values.

  {-4, -2, 4} = -2(x +1) +4 . . . substitute the range values for y

  {2, 1, -2} = x +1 -2 . . . . . . .divide by -2

  {2, 1, -2} = x -1 . . . . . . . . . simplify

  {3, 2, -1} = x . . . . . . . . . . . add 1

The domain of the function is {-1, 2, 3}.