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?

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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) About Me  (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
(0,infinity)
and range ( negative numbers as outputs) of the machine
(infinity,0)

Answer by ikleyn(52797) About Me  (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).