You can
put this solution on YOUR website!I'm sorry to hear you afraid to ask your teacher, don't ever be afraid to ask us.
First step would be to but each equation in slope-intercept form;
y=mx+b
m=slope
b=y-intercept
(1) 2x+y=9
subtract 2x from each side ;
y=9-2x
but this in the slope -intercept form;
y=-2x+9
slope=-

y-intercept=9
the y-intercept is your strating point on the graph, it is;
(0,9)
So you plot that point on the graph and with the slope of -2/1 you count the units and plot the next point.
so from (0,9) you go 2 units down and 1 unit over to the right. Thepoint you land on should be (1,7), and then plot one more point, then you draw your line

(2) -x-y = -8
For this one add x to each side;
-y=-8+x
y=8-x
Correct form;
y=-x+8
slope=-

y-intercept=8

(3) - 3x + 4y = 2
4y=2+3x
y=

+3x
y=3x+

slope=

y-intercept=

(4) -2x -y = -3
-y=-3+2x
-y=2x-3
y=-2x+3
slope=-

x
y-intercept=3

Hope you understand, don't be afraid to ask when you have problems.
=)