Question 1085865

I need an example of how to solve this because I am not solving this correctly. This is my work (which is wrong)because I want it in y=mx+b so that I can get the slope (m) but im only able to solve for x.. please help.
9y+5x>=9y-20
9y+5x=9y-20
+9y
5x=-20
x=-20/5
x=-4,    -4,0 but how do I then get the slope so I can graph this?
Below is the exact wording to the question:

Graph the solution set of the following linear inequality:
9y+5x>=9y-20
<pre>The INEQUALITY results in: {{{x >= - 4}}} <====== You are correct. Good job!!
This INEQUALITY has an UNDEFINED slope, and as such, represents a SOLID (UNBROKEN) VERTICAL line at x = - 4, and which is parallel to the y-axis. 
Now, since the INEQUALITY is: {{{x >= - 4}}}, you need to shade to the right of this VERTICAL LINE.
That's all!!