Explore Westonci.ca, the top Q&A platform where your questions are answered by professionals and enthusiasts alike. Connect with a community of experts ready to provide precise solutions to your questions on our user-friendly Q&A platform. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform.

Which ordered pair is a solution to the system of linear equations?

[tex]\[
\begin{array}{l}
x + 2y = 3 \\
y = -2x - 3
\end{array}
\][/tex]

A. [tex]\((-3, -3)\)[/tex]
B. [tex]\((3, 3)\)[/tex]
C. [tex]\((3, -3)\)[/tex]
D. [tex]\((-3, 3)\)[/tex]


Sagot :

To determine which ordered pair is a solution to the given system of linear equations, we need to check each pair against both equations. The system of equations is:

1. [tex]\( x + 2y = 3 \)[/tex]
2. [tex]\( y = -2x - 3 \)[/tex]

Let's examine each given ordered pair to see which one satisfies both equations:

### Pair (-3, -3)
1. Substitute [tex]\( x = -3 \)[/tex] and [tex]\( y = -3 \)[/tex] into the first equation:
[tex]\[ -3 + 2(-3) = -3 - 6 = -9 \neq 3 \][/tex]
Therefore, (-3, -3) does not satisfy the first equation.

### Pair (3, 3)
1. Substitute [tex]\( x = 3 \)[/tex] and [tex]\( y = 3 \)[/tex] into the first equation:
[tex]\[ 3 + 2(3) = 3 + 6 = 9 \neq 3 \][/tex]
Therefore, (3, 3) does not satisfy the first equation.

### Pair (3, -3)
1. Substitute [tex]\( x = 3 \)[/tex] and [tex]\( y = -3 \)[/tex] into the first equation:
[tex]\[ 3 + 2(-3) = 3 - 6 = -3 \neq 3 \][/tex]
Therefore, (3, -3) does not satisfy the first equation.

### Pair (-3, 3)
1. Substitute [tex]\( x = -3 \)[/tex] and [tex]\( y = 3 \)[/tex] into the first equation:
[tex]\[ -3 + 2(3) = -3 + 6 = 3 \][/tex]
The first equation is satisfied.

2. Substitute [tex]\( x = -3 \)[/tex] and [tex]\( y = 3 \)[/tex] into the second equation:
[tex]\[ y = -2(-3) - 3 = 6 - 3 = 3 \][/tex]
The second equation is also satisfied.

Since the ordered pair [tex]\((-3, 3)\)[/tex] satisfies both equations in the system, it is the solution to the system. Therefore, the correct ordered pair is:

[tex]\[ (-3, 3) \][/tex]
We appreciate your time. Please come back anytime for the latest information and answers to your questions. We hope this was helpful. Please come back whenever you need more information or answers to your queries. Thank you for using Westonci.ca. Come back for more in-depth answers to all your queries.