1. **State the problem:** Solve the system of linear equations:
$$-\frac{1}{4}x + 3y = 6$$
$$-2x + 24y = 48$$
2. **Rewrite the first equation to eliminate fractions:** Multiply both sides of the first equation by 4 to clear the denominator:
$$4 \times \left(-\frac{1}{4}x + 3y\right) = 4 \times 6$$
$$\cancel{4} \times -\frac{1}{\cancel{4}}x + 4 \times 3y = 24$$
$$-x + 12y = 24$$
3. **Rewrite the system:**
$$-x + 12y = 24$$
$$-2x + 24y = 48$$
4. **Use substitution or elimination. Here, use elimination:** Multiply the first equation by 2 to align coefficients of $x$:
$$2 \times (-x + 12y) = 2 \times 24$$
$$-2x + 24y = 48$$
5. **Subtract the second equation from this new equation:**
$$(-2x + 24y) - (-2x + 24y) = 48 - 48$$
$$0 = 0$$
6. **Interpretation:** The two equations are dependent (the second is just twice the first). This means there are infinitely many solutions along the line defined by one of the equations.
7. **Express $x$ in terms of $y$ from the first simplified equation:**
$$-x + 12y = 24$$
$$-x = 24 - 12y$$
$$x = -24 + 12y$$
**Final answer:** The solution set is all points $(x,y)$ such that
$$x = -24 + 12y$$
for any real number $y$.
Linear System 4D40A5
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