Is X 2 Y 2 25 A Function Mathematics Stack Exchange
The rule is that you plug in x and y and must have x 2 y 2 = 25 be true The domain is important For example, if the domain is only x = − 5 and x = 5, then you have a function sinceDetermine whether the equation defines y as a function of x X^2y=49 y = x^249
