1. **State the problem:** We need to find the value of $y$ that satisfies the system of equations:
$$9x + 5y = 8$$
$$3x - y = 4$$
2. **Use substitution or elimination method:** Here, we will use substitution. From the second equation, solve for $y$:
$$3x - y = 4 \implies y = 3x - 4$$
3. **Substitute $y$ into the first equation:**
$$9x + 5(3x - 4) = 8$$
4. **Simplify and solve for $x$:**
$$9x + 15x - 20 = 8$$
$$24x - 20 = 8$$
$$24x = 8 + 20$$
$$24x = 28$$
5. **Divide both sides by 24:**
$$x = \frac{28}{24} = \frac{\cancel{28}}{\cancel{24}} = \frac{7}{6}$$
6. **Substitute $x = \frac{7}{6}$ back into $y = 3x - 4$ to find $y$:**
$$y = 3 \times \frac{7}{6} - 4 = \frac{21}{6} - 4 = \frac{21}{6} - \frac{24}{6} = \frac{21 - 24}{6} = \frac{-3}{6} = -\frac{1}{2}$$
**Final answer:** The $y$-value of the solution is $-\frac{1}{2}$, which corresponds to option A.
Solve System E87209
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