Respuesta :

irspow
dy/dx=m=slope

slope=(y2-y1)/(x2-x1),  since this is a line you can use any two point you wish because the slope never changes for a line...

I'll use the first and last point to find slope...

m=(0-12)/(27.5-0)

m=-12/27.5

m=-120/275

m=-24/55

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