m=1 b=0
For M: Using the formula to find slope y2-y1/ x2-x1 we can select 2 sample points in this case I’ll use (1, 1) and (2, 2). Inserting those into the formula we get 2-1/ 2-1 which, after subtracting, is 1/1 or 1.
B: The point where the line crosses the y-axis is the origin or (0, 0)