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Graph the system of equations below. What is the solution?

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

A. [tex]\((3, 0)\)[/tex]

B. [tex]\((2, 1)\)[/tex]

C. [tex]\((1, -1)\)[/tex]

D. [tex]\((0, -3)\)[/tex]


Sagot :

Certainly! Let's solve the system of equations step-by-step to find the intersection point of the two lines.

We have the equations:
1. [tex]\( y = 2x - 3 \)[/tex]
2. [tex]\( y = -x + 3 \)[/tex]

To find the solution, we set these two equations equal to each other because at the intersection, both [tex]\( y \)[/tex] values will be the same.

So,

[tex]\[ 2x - 3 = -x + 3 \][/tex]

Next, let's solve for [tex]\( x \)[/tex]:

1. Combine like terms by adding [tex]\( x \)[/tex] to both sides:
[tex]\[ 2x + x - 3 = 3 \][/tex]
[tex]\[ 3x - 3 = 3 \][/tex]

2. Add 3 to both sides to isolate the term with [tex]\( x \)[/tex]:
[tex]\[ 3x = 6 \][/tex]

3. Divide both sides by 3 to solve for [tex]\( x \)[/tex]:
[tex]\[ x = 2 \][/tex]

Now that we have [tex]\( x = 2 \)[/tex], we need to find [tex]\( y \)[/tex]. Substitute [tex]\( x \)[/tex] back into one of the original equations. Let's use the first equation:

[tex]\[ y = 2x - 3 \][/tex]
[tex]\[ y = 2(2) - 3 \][/tex]
[tex]\[ y = 4 - 3 \][/tex]
[tex]\[ y = 1 \][/tex]

Therefore, the solution to the system of equations is [tex]\( (2, 1) \)[/tex].

Let's verify this solution by substituting [tex]\( x = 2 \)[/tex] into the second equation:

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

This confirms that [tex]\( (2, 1) \)[/tex] is indeed the solution to the system of equations.

Therefore, the correct solution is [tex]\( (2, 1) \)[/tex].

Thus, the answer is:
B. [tex]\( (2, 1) \)[/tex]