Transformation of variable

Hi All,

I am doing simple linear regression and there is curvilinear curve in the scatter plot of the independent and dependent variable.

y = B0 + B1*x

I tried doing some transformation to remove this curvilinear shape. In the end, i ended up with two transformations:

1/(y)^(1/2) = B1/(x)^(1/2) + B0

ln(y) = B1*ln(x) + B0

I just want to know, whether these transformation are valid. Can i transform both independent and dependent variables in these manners?