How do I find the coordinates of the vertices of the figure formed by each system of inequalities: y+x "=" -9 y "=" x-7 2y + x"

Question

How do I find the coordinates of the vertices of the figure formed by each system of inequalities:
y+x ">=" -9
y ">=" x-7
2y + x"<=" 16

anonymous · Answer

Do you know how to graph inequalities?

anonymous · Answer

no

anonymous · Answer

Do you know how to graph straight lines ?

anonymous · Answer

Algebra is very tough for me...what do you mean by straight lines? Yes for basic graphing, no for inequalities if that makes sense...

anonymous · Answer

So if i tell you graph x+y=9 you know how to do it?

anonymous · Answer

yes, sort of...using an x/y table?

anonymous · Answer

Yeah whatever method, so if you want to graph the first inequality 
x+y>=9, so first you draw the graph of x+y=9 which looks like |dw:1326255853342:dw|