Hi,

So good to hear you are using www.padowan.dk/graph 

To get an accurate look at the slope, one need to use the same range for x and y.

In order to see where the line crosses the x-axis, am using the range -300,300 for both x and y-values of the Axes.

P = .15x -28    || As in y = mx + b, where m is the slope and b the y-intercept

m = .15



If one uses for ex -100, 100 for the y-values, that's ok ... just that then the

graph at first glance appears to say y is increasing 'faster' so to speak.



As to Your other questions: You did not say if P represents profit in 1000s?

Many times that is used.  or if x represents how many thousands are made...

One needs to know what exactly the x and P represent

 

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