1. **State the problem:** Solve the system of linear equations by graphing:
$$\begin{cases} x + y = 6 \\ x - y = 2 \end{cases}$$
2. **Rewrite each equation in slope-intercept form $y = mx + b$ to graph easily:**
For the first equation:
$$x + y = 6 \implies y = 6 - x$$
For the second equation:
$$x - y = 2 \implies -y = 2 - x \implies y = x - 2$$
3. **Graph the lines:**
- The first line has slope $-1$ and y-intercept $6$.
- The second line has slope $1$ and y-intercept $-2$.
4. **Find the intersection point algebraically to confirm the solution:**
Set the right sides equal:
$$6 - x = x - 2$$
Add $x$ to both sides:
$$6 = 2x - 2$$
Add $2$ to both sides:
$$6 + 2 = 2x$$
$$8 = 2x$$
Divide both sides by $2$:
$$\frac{8}{\cancel{2}} = \frac{2x}{\cancel{2}} \implies 4 = x$$
Substitute $x=4$ into $y = 6 - x$:
$$y = 6 - 4 = 2$$
5. **Interpretation:**
- The lines intersect at the point $(4, 2)$.
- This means the system has exactly one solution.
- The system is consistent and independent.
6. **Summary:**
- Solution: $\boxed{(4, 2)}$
- Number of solutions: 1
- Type of system: Consistent and independent
Solve By Graphing 49C117
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