1. **State the problem:** Solve the system of equations by graphing and find the solution as an ordered pair.
Given system:
$$3x + 3y = -6$$
$$10x + 5y = -5$$
2. **Rewrite each equation in slope-intercept form $y = mx + b$ to understand the lines:**
For the first equation:
$$3x + 3y = -6$$
Subtract $3x$ from both sides:
$$3y = -3x - 6$$
Divide both sides by 3:
$$y = \cancel{\frac{3}{3}}{-x} - \cancel{\frac{6}{3}}{2}$$
So,
$$y = -x - 2$$
For the second equation:
$$10x + 5y = -5$$
Subtract $10x$ from both sides:
$$5y = -10x - 5$$
Divide both sides by 5:
$$y = \cancel{\frac{5}{5}}{-2x} - \cancel{\frac{5}{5}}{1}$$
So,
$$y = -2x - 1$$
3. **Analyze the lines:**
- First line slope: $-1$, y-intercept: $-2$
- Second line slope: $-2$, y-intercept: $-1$
Since the slopes are different, the lines intersect at exactly one point.
4. **Find the intersection point by solving the system algebraically:**
Set the right sides equal since both equal $y$:
$$-x - 2 = -2x - 1$$
Add $2x$ to both sides:
$$-x + 2x - 2 = -1$$
Simplify:
$$x - 2 = -1$$
Add 2 to both sides:
$$x = 1$$
5. **Substitute $x=1$ into one of the original equations to find $y$:**
Using $y = -x - 2$:
$$y = -1 - 2 = -3$$
6. **Solution:**
$$(x, y) = (1, -3)$$
**Answer:** The solution to the system is the ordered pair $(1, -3)$.
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**Note on the graph:** The user described two vertical lines at $x = -3$ and $x = 3$ which do not correspond to the given equations. The actual lines from the equations are not vertical and intersect at $(1, -3)$.
Solve System Fc8187
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