SOLUTION: The Flip machine takes positive numbers as inputs and multiplies them by -2 to get the outputs. What is the domain and range of the machine?

Question 1151549: The Flip machine takes positive numbers as inputs and multiplies them by -2 to get the outputs. What is the domain and range of the machine?
Found 2 solutions by MathLover1, ikleyn:
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
recall: When you multiply a positive number by a negative number then the product is always negative.
the outputs will be negative numbers
the domain (positive numbers as inputs) of the machine
(,)
and range ( negative numbers as outputs) of the machine
(,)
Answer by ikleyn(52798) (Show Source): You can put this solution on YOUR website!
.

The domain is the input set of real numbers, which is semi-infinite interval (0,infinity) = (0,oo). The range is the output set of real numbers, which is (-infinity,0) = (-oo,0).

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