What part of the formula represents the change in y?

The equation in slope-point form is:
[tex]y-y_1=m\cdot(x-x_1)[/tex]A. The change in "y" is represented by "y - y1". The function shifts "y1" units down.
B. The change in "x" is represented by "x -x1". The function shifts "x1" units right.