Given that positive numbers a and b with a > b satisfy the equation a^2+b^2=104 and ab=20, find the value 3(a^2-b^2).​

incomplete question. how do you expect anyone to you when you do not post the question in its entirety?

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

the workers who do no drive has no reasonable reason to buy gasoline due to they don't have anything to use it for