Is (
–
9,4) a solution to this system of equations?
8x–11y=14
15x–3y=
–
13
MathBot Answer:
False, $\left( -9, \ 4\right)$ is not a solution of $8 x - 11 y = 14 \text{ and } 15 x - 3 y = -13$.
$$\begin{gathered}8 x - 11 y = 14\\8 \left(-9\right) - 11 \left(4\right) \stackrel{?}{=} 14\\-116 \neq 14\end{gathered}$$$$\begin{gathered}15 x - 3 y = -13\\15 \left(-9\right) - 3 \left(4\right) \stackrel{?}{=} -13\\-147 \neq -13\end{gathered}$$