Solving System of Equations by Graphing

Hey!

I've got a problem I need help with. I'm trying to solve this system of equations by graphing.

However, **I can't seem to convert the second equation into slope-intercept form so that I can graph it.**

I just started 10th grade, and although I'm pretty good at math I'd appreciate if you didn't get too complicated :)

The problem:

5. Solve the system of equations by graphing:

$\displaystyle x+\frac{y}{2}=-3$

$\displaystyle \frac{x}{6}+\frac{y}{3}=2$

**What I've got so far:**

I've converted the first equation to slope-intercept form and graphed it:

$\displaystyle y=-2x-6$

The closest to getting the second equation in slope-intercept form I have is:

$\displaystyle y=-\frac{x}{2}+6$

Any and all help is appreciated, please and thanks! :)