Question

Hello , can you please see attached and give me only the answer.

Answer 1

not a solution

Explanation:

We have the following system of equations:

`\begin{gathered} 2x+5y=-18 \\ 6x-4y=15 \end{gathered}`

We have the point (1, -4), which we can interpret like this:

x = 1

y = -4

We replace these values and if it meets the system of equations, if it is a solution and if not, it is not a solution.

Therefore:

`\begin{gathered} 2\cdot1+5\cdot-4=-18 \\ 2-20=-18 \\ -18=-18 \\ \\ 6\cdot1-4\cdot-4=15 \\ 6+16=15 \\ 22=15 \end{gathered}`

The first equation does, but the second does not, which means that the point (1, -4) is not a solution of the system of equations