I know that to plot a straight line that intersects the axis in point $(x_1,y_1)$,(x_2,y_2)$ one can use this equation.
To be more specific if i want a line that intesects the axis in a given point, I can use:
$$x_1(y-y_2)=- y_2 x$$
but I need to plot a logarithmic function that will intersect the axis in $2$ designated points. for example I know that:
$$y=-\log(0.5+x)$$ intersects $y$ in $0.301$
Can anyone point me to a method of finding such an equation ?