Math Problem Solver

False, $\left( 5, \ 4\right)$ is not a solution of $15 x - 20 y \geq -5 \text{ and } 8 x - 9 y > 4$.

$$\begin{gathered}15 x - 20 y \geq -5\\15 \left(5\right) - 20 \left(4\right) \stackrel{?}{\ge} -5\\-5 \ge -5\end{gathered}$$$$\begin{gathered}8 x - 9 y > 4\\8 \left(5\right) - 9 \left(4\right) \stackrel{?}{\gt} 4\\4 \ngtr 4\end{gathered}$$