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(5,25) (0,40) y=3(x)=b how do you find the slope of this equation

(5,25) (0,40) y=3(x)=b 
 
find the slope

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Vivian L. | Microsoft Word/Excel/Outlook, essay composition, math; I LOVE TO TEACHMicrosoft Word/Excel/Outlook, essay comp...
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Hi Nana;
I am assuming that...
y=3(x)=b
is
y=3x-b
Henceforth, the slope is 3.
 
I am assuming that...
(5,25) (0,40)
are coordinates, (x,y)
 
Slope=(y2- y1)/(x2 - x1)
Slope=(40-25)/(0-5)
Slope=15/-5
Slope=-3
 
Please recheck the equation...
y=3(x)=b
should indicate the slope as -3, not 3.