MATLAB: Slope of a line

I'm trying to find the slope of this line
line([newBoxPolygon(1, 1) newBoxPolygon(4, 1)],[newBoxPolygon(1, 2) newBoxPolygon(4, 2)],'Color','G');
%Slope
X = (max([50 50])-min([50 50]));        
Y=(max([1 10000])-min([1 10000]));
Slope_Reference=Y/X;
disp('Slope_Reference:');disp(Slope_Reference);
Is the slope i'm obtaining correct ?

Best Answer

In general, your equation is correct, k = dY/dX, however, in
 X = (max([50 50])-min([50 50]));         % 50 - 50 = 0
 Y = (max([1 10000])-min([1 10000]));
X = 0 resulting in a slope of Inf. So I am wondering what you are trying to compute the slope of.
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