Respuesta :

Hello from MrBillDoesMath!


Answer:   -1

Discussion :


The slope of a non vertical line through the points (x1, y1), (x2, y2) is

m = (y2 - y1) / (x2-1x1)


In your case,


m = (2 - 7)/ (9-4) = -5/5 = -1

Regards, MrB