Graphing systems of equations and inequalities

[aj923]

How do you graph systems and inequalities? Here are some ones that I have trouble with:

Systems
1) x= -5
y= -6

2) x+y=0
x-y+2+0

Inequalities
3) y<2x
2x+ y< -5

4) x+y=6
x is greater than or equal to 4

 

[tkhunny]

You can graph none of those?

Please describe for me x = 2. What kind of line is that?

 

[aj923]

a vertical line isnt it?

 

[tkhunny]

Excellent. This should be sufficient to get you through the 1).

2) has a little problem. I'm guessing you meant "= 0", not "+0"

Can you graph x+y = 0 or y = -x?
How about x-y+2 = 0 or y = x+2?

If you have the slope-intercept form in your head, you will get it.