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Is 4X plus Y equals eight and X plus 3Y equals eight consistent independent consistent dependent or inconsistent?

User Yordan
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1 Answer

3 votes

Final answer:

The system of equations is consistent and independent with the solution X = 16/11 and Y = 24/11.

Step-by-step explanation:

To determine if the system of equations is consistent, independent, dependent, or inconsistent, we need to solve the system of equations.

Given:

4X + Y = 8 ---(1)

X + 3Y = 8 ---(2)

We can solve this system of equations using the method of elimination:

  • Multiply equation (2) by 4 to make the coefficients of X in both equations equal.
  • 4(X + 3Y) = 4(8)
  • 4X + 12Y = 32 ---(3)
  • Now, subtract equation (1) from equation (3) to eliminate X.
  • (4X + 12Y) - (4X + Y) = 32 - 8
  • 11Y = 24
  • Y = 24/11
  • Substitute the value of Y into any of the original equations to find the value of X.
  • Using equation (1): 4X + (24/11) = 8
  • 4X = 8 - (24/11)
  • 4X = (88 - 24)/11
  • 4X = 64/11
  • X = (64/11)/4
  • X = 64/44 = 16/11

Therefore, the system of equations is consistent and independent. The solution is X = 16/11 and Y = 24/11.

User Ilkka
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