Solve by the elimination method.

[tex]\[
\begin{array}{rr}
-x + 4y = 3 \\
-2x + 8y = 6
\end{array}
\][/tex]

Select the correct choice below and, if necessary, fill in the answer box to complete your choice.

A. The solution set is [tex]$\square$[/tex]. (Type an ordered pair.)

B. There are infinitely many solutions.

C. The solution is the empty set.



Answer :

To solve the given system of equations using the elimination method, we need to manipulate the equations in a way that allows us to eliminate one of the variables.

The given system of equations is:
[tex]\[ \begin{array}{rr} -x + 4y = 3 \\ -2x + 8y = 6 \end{array} \][/tex]

1. Identify the equations:
[tex]\[ \begin{align*} \text{Equation 1:} & \quad -x + 4y = 3 \\ \text{Equation 2:} & \quad -2x + 8y = 6 \end{align*} \][/tex]

2. Manipulate the equations to eliminate one variable:
Notice that Equation 2 is simply twice Equation 1:
[tex]\[ -2x + 8y = 2(-x + 4y) = 2 \times 3 = 6 \][/tex]

Since Equation 2 is a scalar multiple of Equation 1, the two equations are essentially the same line. This means they are dependent and represent the same set of points.

3. Analyze the systematic implications:
When two linear equations are dependent, they have infinitely many solutions that lie on the line represented by either equation.

Given the analysis above, we conclude:

B. There are infinitely many solutions.