1. **State the problem:** We are given two inequalities:
$$y \leq \frac{7}{4}x + 3$$
$$y < -\frac{3}{2}x + 5$$
We want to understand the solution region that satisfies both inequalities on the coordinate plane.
2. **Understand the inequalities:**
- The first inequality represents all points on or below the line with slope $\frac{7}{4}$ and y-intercept 3.
- The second inequality represents all points strictly below the line with slope $-\frac{3}{2}$ and y-intercept 5.
3. **Find the intersection point of the two lines:**
Set the right sides equal to find where the lines cross:
$$\frac{7}{4}x + 3 = -\frac{3}{2}x + 5$$
4. **Solve for $x$:**
$$\frac{7}{4}x + \frac{3}{2}x = 5 - 3$$
Convert $\frac{3}{2}x$ to $\frac{6}{4}x$ for common denominator:
$$\frac{7}{4}x + \frac{6}{4}x = 2$$
$$\frac{13}{4}x = 2$$
Multiply both sides by $\cancel{\frac{4}{13}}$:
$$x = 2 \times \frac{4}{13} = \frac{8}{13}$$
5. **Find $y$ at $x=\frac{8}{13}$:**
Use the first line:
$$y = \frac{7}{4} \times \frac{8}{13} + 3 = \frac{56}{52} + 3 = \frac{14}{13} + 3 = \frac{14}{13} + \frac{39}{13} = \frac{53}{13}$$
6. **Interpretation:**
The two lines intersect at the point $$\left(\frac{8}{13}, \frac{53}{13}\right)$$.
7. **Solution region:**
The solution to the system is the set of points that satisfy both inequalities simultaneously:
- Points on or below the line $y = \frac{7}{4}x + 3$
- Points strictly below the line $y = -\frac{3}{2}x + 5$
This region is the intersection of the half-planes defined by these inequalities.
**Final answer:** The solution region is all points $$ (x,y) $$ such that
$$y \leq \frac{7}{4}x + 3 \quad \text{and} \quad y < -\frac{3}{2}x + 5.$$
Linear Inequalities 5D111F
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