Question 1046605
{{{drawing(300,300,    -2,10,-50,350,  
 grid(1),
circle(1,150,0.2),
circle(3,175,0.2),
circle(4,185,0.2),
circle(6,200,0.2),
circle(8,300,0.2),
graph( 300, 300, -2,10,-50,350,0))}}}
depending on accuracy needed:
One may want to use a scatter plot in Excel and find the equation of the trend line