Respuesta :

Let's first find the slope of the line:

[tex]m=\frac{-2-1}{-2-1}=\frac{-3}{-3}=1[/tex]

then the equation in slope-point form wil be:

[tex]y-1=x-1[/tex]

then

[tex]y=x[/tex]

is the slope-intercept form of the line equation.