Just Need A Trend Line Equation Please Based On This Quick Info! Pls Help :)

Question

nitroster · Answer

attachment

nitroster · Answer

attachment

nitroster · Answer

I used to have an account here :P was lvl 55

sooobored · Answer

from what you have drawn

wouldnt it be easier to draw the line through point (30,20) and (25,60)

sooobored · Answer

and then use these two easy points in order to determine the equation of the line?

sunnnystrong · Answer

It is also easy to use excel... graph the set of values given and than make a graph (scatter plot) and display the equation of the graph (there is a setting)

nitroster · Answer

Your right, in fact.. I tried using (24,66) and (14,150) then I found the slope and used one of the points for the point-slope formula. I solved for the slope-intercept formula. Is that ok? and am I able to plug in the age for x?

sooobored · Answer

that method is perfectly fine,

there is no one correct trend line

nitroster · Answer

Ok, thanks! And I can use the age as x? My slope-intercept equation is y = -88/10x + 1338/5

sooobored · Answer

age IS x
where as Y is posts

since you used x as age when determine the slope

nitroster · Answer

OHHH thanks so much :D