1. **State the problem:** Solve the system of equations by graphing:
$$2x + y = 2$$
$$3x + 6y = -6$$
2. **Rewrite each equation in slope-intercept form $y = mx + b$ to graph easily:**
For the first equation:
$$2x + y = 2 \implies y = 2 - 2x$$
For the second equation:
$$3x + 6y = -6 \implies 6y = -6 - 3x \implies y = \frac{-6 - 3x}{6} = -1 - \frac{1}{2}x$$
3. **Graph the lines:**
- First line: $y = 2 - 2x$
- Second line: $y = -1 - \frac{1}{2}x$
4. **Find the intersection point algebraically to confirm the solution:**
Set the two expressions for $y$ equal:
$$2 - 2x = -1 - \frac{1}{2}x$$
5. **Solve for $x$:**
$$2 - 2x = -1 - \frac{1}{2}x$$
Add $2x$ to both sides:
$$2 = -1 + \frac{3}{2}x$$
Add $1$ to both sides:
$$3 = \frac{3}{2}x$$
Multiply both sides by $\cancel{\frac{2}{3}}$ to isolate $x$:
$$x = 3 \times \cancel{\frac{2}{3}} = 2$$
6. **Find $y$ by substituting $x=2$ into one of the equations:**
Using $y = 2 - 2x$:
$$y = 2 - 2(2) = 2 - 4 = -2$$
7. **Solution:**
The lines intersect at the point $$\boxed{(2, -2)}$$ which is the solution to the system.
This means the system has one unique solution where the two lines cross.
Solve System 2E49Ac
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