1. **State the problem:** We need to plot the lines $y=3x-11$ and $y=-2x+4$ by completing their tables of values, then use the graph to solve the simultaneous equations.
2. **Complete the tables:**
For $y=3x-11$:
- When $x=0$, $y=3(0)-11=0-11=-11$
- When $x=1$, $y=3(1)-11=3-11=-8$
- When $x=2$, $y=3(2)-11=6-11=-5$
Table:
\begin{array}{c|ccc}
x & 0 & 1 & 2 \\
y & -11 & -8 & -5 \\
\end{array}
For $y=-2x+4$:
- When $x=0$, $y=-2(0)+4=0+4=4$
- When $x=1$, $y=-2(1)+4=-2+4=2$
- When $x=2$, $y=-2(2)+4=-4+4=0$
Table:
\begin{array}{c|ccc}
x & 0 & 1 & 2 \\
y & 4 & 2 & 0 \\
\end{array}
3. **Plot the points:**
- For $y=3x-11$: points $(0,-11)$, $(1,-8)$, $(2,-5)$
- For $y=-2x+4$: points $(0,4)$, $(1,2)$, $(2,0)$
4. **Solve the simultaneous equations algebraically:**
Set $3x-11 = -2x+4$
$$3x - 11 = -2x + 4$$
Add $2x$ to both sides:
$$3x + 2x - 11 = 4$$
$$5x - 11 = 4$$
Add $11$ to both sides:
$$5x = 4 + 11$$
$$5x = 15$$
Divide both sides by $5$:
$$\frac{\cancel{5}x}{\cancel{5}} = \frac{15}{5}$$
$$x = 3$$
Substitute $x=3$ into $y=3x-11$:
$$y = 3(3) - 11 = 9 - 11 = -2$$
5. **Final answer:** The solution to the simultaneous equations is $\boxed{(3, -2)}$.
This means the two lines intersect at the point $(3, -2)$ on the graph.
Simultaneous Equations 5568C1
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