How do I graph the solution set of x<-7??? Someone PLEASE HELP!!
Thank You
It depends on whether you are graphing on a NUMBER LINE or on an
XY-GRAPH. I'll show you both ways:
1. If you are graphing on a NUMBER LINE then this is the way:
Start with a number line:
------------------------------------------------------------
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4
Put a circle at -7:
---------------o--------------------------------------------
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4
Then remember the rule "Less is Left, and gReateR is Right".
x < -7 is Less, so we shade the line Left of the "o", and put an
arrowhead on the end.
<==============o--------------------------------------------
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4
2. If you are to graph x < -7 on an XY-GRAPH, then forget that
and do it this way:
First draw a vertical line through -7 on the x-axis. However
you MUST to draw it DOTTED. I can only draw SOLID lines here,
but you can draw it DOTTED on your paper.
Then you shade the area to the left of that vertical line, like
this:
Don't forget to draw your vertical line dotted and not solid
as I have it here. What I have drawn above is the graph of
x < -7, not x < -7. When you have < or > you must
draw the vertical line solid, but otherwise you must draw
it dotted.
Edwin
