What is the slope of the line that passes through the points (5,7) and (-1, 19) ?

For this case we have that by definition, having two points through which a line passes , we can find its slope of the following form:

If we have:

We know that equal signs are added and the same sign is placed

So, the slope of that line is

i belive those are the ones that are under 90 degreese.