1. **Stating the problem:**
We have the line equation $$3x - 2y = a$$ and it cuts the y-axis at point $$P(0,4)$$. We need to find the constant $$a$$ and then find the x-intercept point $$Q$$ where the line cuts the x-axis.
2. **Finding the value of $$a$$:**
The y-axis is where $$x=0$$. Substitute $$x=0$$ and $$y=4$$ into the equation:
$$3(0) - 2(4) = a$$
$$0 - 8 = a$$
$$a = -8$$
3. **Finding the x-intercept $$Q$$:**
The x-intercept occurs where $$y=0$$. Substitute $$y=0$$ and $$a=-8$$ into the equation:
$$3x - 2(0) = -8$$
$$3x = -8$$
$$x = \frac{-8}{3}$$
So, the coordinates of $$Q$$ are $$\left( -\frac{8}{3}, 0 \right)$$.
**Final answers:**
- $$a = -8$$
- $$Q = \left( -\frac{8}{3}, 0 \right)$$
Line Intercepts Cf77Ed
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