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Possible Duplicate:
Math – mapping numbers
I have value “x” that can be from 0 to 127 and a value “y” that can be from -1000 to 0.
I need to make that if x = 0 than y = -1000 and if x = 127 than y = 0… How can i make it?
It sounds like you just want a linear equation (y = mx + b). In your case, this would be