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Question 633151: Profit=(cost per item x number of items)-constant charges
Please help with graphing this equation Profit=$0.15xnumber of e-readers sold-$28
y=0.15x-28 this is the equation I came up with to insert into function in order to graph, is this correct? I am using www.padowan.dk/graph site. I need to discuss x and y axis values on the graph which need to be label.
If the company does sell any e-reader how much is lost? Mathemeatically what is this value called in the equation? (loss)
If company sells 5,000 e-readers how will company make or loss?
If profit must equal 100 thousand, how many e-reader will nedd to be sold to accomplish this.
Answer by ewatrrr(24785)   (Show Source):
You can put this solution on YOUR website!
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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