1. The problem is to analyze the system of linear equations from set 7:
$$y = -\frac{1}{2}x - 2$$
$$y = -\frac{3}{2}x + 2$$
2. We want to find the point of intersection of these two lines, if any.
3. Set the right-hand sides equal since at the intersection point both $y$ values are the same:
$$-\frac{1}{2}x - 2 = -\frac{3}{2}x + 2$$
4. Add $\frac{3}{2}x$ to both sides:
$$-\frac{1}{2}x + \frac{3}{2}x - 2 = 2$$
5. Simplify the left side:
$$\left(-\frac{1}{2} + \frac{3}{2}\right)x - 2 = 2$$
$$\frac{2}{2}x - 2 = 2$$
$$x - 2 = 2$$
6. Add 2 to both sides:
$$x - \cancel{2} + \cancel{2} = 2 + 2$$
$$x = 4$$
7. Substitute $x=4$ into the first equation to find $y$:
$$y = -\frac{1}{2} \times 4 - 2 = -2 - 2 = -4$$
8. The point of intersection is:
$$(4, -4)$$
This means the two lines cross at the point where $x=4$ and $y=-4$.
"slug": "line intersection",
"subject": "algebra",
"desmos": {"latex": "y=-\frac{1}{2}x-2, y=-\frac{3}{2}x+2", "features": {"intercepts": true, "extrema": false}},
"q_count": 2
Line Intersection F5Cab2
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