Solve this system of equations by graphing. First graph the equations, and then type the solution.
x–3y=-6
x+3y=-6

Question

Solve this system of equations by graphing. First graph the equations, and then type the solution.
x–3y=-6
x+3y=-6

hlambach · Answer

It will be much easier if you first isolate y. Can you do that?

anonymous · Answer

yea so x-y=-2 
&
x+y=-2

anonymous · Answer

@hlambach

hlambach · Answer

No, as in find what y is. So the first one would be:
x–3y=-6
-x          -x
-3y= -x - 6 
/-3      /-3
y = 1/3x + 2
Can you do the second one?

hlambach · Answer

Do you see a ton of question marks, or is that just me? If yes, then the only thing it is supposed to be is the original equation. If not, don't mind this.

anonymous · Answer

i do

hlambach · Answer

x-3y = -6
-x          -x
-3y= -x - 6 
/-3      /-3
y = 1/3x + 2

hlambach · Answer

But can you do the second one?

anonymous · Answer

x+3y=-6
-x           -x
    3y=-6-x
     /-3  /-3 
y=2-x or y=2-1/1?

anonymous · Answer

is that right?

hlambach · Answer

Remember that when there is only an x, it actually means 1x, so then you divide the 1 by 3, which would then be
y=-1/3x + 2

hlambach · Answer

So you have your two formulas
y = 1/3x + 2
y = -1/3 + 2
Do you know how to graph that?

hlambach · Answer

@Sara_adalla