How to find slope for each pixel?

I have two tiff files. Tb.tif is on y axis and s.tif is onx axis.

A = imread('Tb.tif');

S =imread('s.tif');

I want to calculate slope using A = b*S for each pixel

[Image Analyst]

You forgot to attach them. And without them I have no idea what you mean by slope or what it means for an entire image to be "on y axis" or "on x axis".

Answer 1

[Mikhail]

As i understood, you need to find b=S/A in each point, so you need to use term-by-term division:

b=S./A;