Question

write an equation in slope intercept form (1,1)and(-2,-2)

Answer 1

Let's first find the slope of the line:

$m=\frac{-2-1}{-2-1}=\frac{-3}{-3}=1$

then the equation in slope-point form wil be:

$y-1=x-1$

then

$y=x$

is the slope-intercept form of the line equation.