Laillanni. M

The Domain is the x’s you are allowed to use while the Range are y’s you get out of the function. The domain is all real numbers to infinity. [1,3) means all number are included except the endpoint 3. While (-infinity,5] means all numbers that less than or equal to 5. What do know about the range and domain?

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When you write[1, 3), it doesn’t mean “all number are included except the endpoint 3.” It means you include all numbers from 1 to 3 except the endpoint 3. Maybe, that’s what you meant, but I just want to make sure you know that a number like 0 or -7 would not be in [1, 3).

The graph you included shows a horizontal line of y = 9. In that case, the range would just be 9 because that’s the only out put you can have. It’s strange to have a function where the range is just one number; usually the range is a whole range of numbers (which is why we call it the “range.”)

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