Once you add all the measurements together, you'll be left with 7.875 gallons of water. Merely convert the gallons of water into pints, and you're left with 63 pints of water being added into the fish pond! <span />
The first thing is to make y the subject of the formula, that means we will take the square root of both sides
y =
since y = , the the value of y could be positive or negative.
For example , = ± 2 , since -2 x -2 will also give + 4
For y = to be a function , there must be a unique value for y for each value of x , but this is not the case as y could be positive or negative for a single value of x , so it is not a function.