I always confuse quadratic function, inverse proportion function and positive proportion function. Who can figure out a way to remember the relationship between these three functions?

I always confuse quadratic function, inverse proportion function and positive proportion function. Who can figure out a way to remember the relationship between these three functions?

A quadratic function contains a quadratic analytic expression - the image is a parabola
The independent variable of inverse scale function is at the denominator, and the independent variable is not equal to 0 - the image is hyperbolic
A positive scale function image is a straight line