The endpoints of a side of rectangle abcd in the coordinate plane are at a(3, 9) and b(4, 1). find the equation of the line that contains the given segment.

Respuesta :

y = -8x+33

slope between two points:
m = (y2-y1)/(x2-x1)
m = (9-1)/(3-4)
m=-8

Find B in: y=mx+b
b=y+8x
Plug in a point for x and y:
b = 9+8(3)
b=33