Respuesta :

Answer:

y = -1x + 1

Step-by-step explanation:

First, find the slope. m=y2-y1/x2-x1

Plug in values : m=(-1-2)/(2--1) = -3/3 = -1

Plug into the long equation thingie :

y-y1=m(x-x1)

y-2= -1(x--1)

y-2= -x-1

y = -1x + 1