Question 311065
Slope is change in y over change in x.
Change in y=1.
Change in x=3.
Start at the given point (0,-2).
{{{x=0+3=3}}}
{{{y=-2+1=-1}}}
(3,-1) is also a point on the line. 
 {{{ drawing( 300, 300, -5, 5, -5, 5, grid(1),
circle(0,-2,.2),
circle(3,-1,.2),
graph( 300, 300, -5, 5, -5, 5, (1/3)(x)-2)) }}}