slope intercept form is simply
[tex]y = mx + b[/tex]
where y and x are the things we see on the graph
m is the slope
and b is the y-intercept
the y-intercept is just what y is equal to when x is 0, so right at the middle of the graph.
so just go ahead and if in!
[tex]y = - \frac{3}{4} x - 3[/tex]
