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For which value of "K" will produce a system with INFINITE SOLUTIONS?

2x - 5y = 8
4x + Ky = 16
A. K = 2
B. K = 4
C. K = 5
D. K = 8

1 Answer

5 votes

Answer:

None of the provided values for K will result in a system with infinite solutions because the second equation needs to have the term -10y to make it a multiple of the first, and none of the choices match this requirement.

Step-by-step explanation:

To determine the value of K that will produce a system with infinite solutions, we must find a value that makes the second equation a multiple of the first. The given equations are:

  • 2x - 5y = 8
  • 4x + Ky = 16

If the two equations are to have infinite solutions, they must represent the same line. This means the coefficients of x and y in the second equation must be exactly twice those in the first equation (since the 4x term is already twice 2x), and the constant term must also be double. Therefore:

  • -5y must become -10y for the y-term.
  • The constant term 8 must become 16.

Since the first condition is already met, we focus on the y-term. To have -10y in the second equation, we need K to equal -10, which is not an option among the choices provided.

However, because of the scaling, the coefficient of y in both equations should be in the same ratio as the coefficient of x, which is 2.

Hence, we take the coefficient of y in the first equation, which is -5, and multiply by 2 to get -10. This means K should be the negative counterpart of the value we're seeking; since none of the options given provide a negative value, none of the provided values for K will yield a system with infinite solutions.

Although the instructions include irrelevant data about equilibrium constants and linear equations, this information doesn't apply to solving the given system of equations for infinite solutions.

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