The definition of zero point is: in y=f(x), x that makes f(x)=0 is called the zero point of this function.

The function y=f(x) has zero equivalent to

The intersection of the function y=f(x) and the x axis is equivalent to

The equation f(x)=0 has a real root.

Note that the zero point is not a coordinate, but the value of the independent variable x that makes the function value y equal to zero.