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2x+7y=1

y=4x-8
Is 
(4,8) a solution of the system?
Choose 1 answer:
(A) Yes
(B) No

2x+7y=1 2 x+7 y=1 \newliney=4x8 y=4 x-8 \newlineIs (4,8) (4,8) a solution of the system?\newlineChoose 11 answer:\newline(A) Yes\newline(B) No

Full solution

Q. 2x+7y=1 2 x+7 y=1 \newliney=4x8 y=4 x-8 \newlineIs (4,8) (4,8) a solution of the system?\newlineChoose 11 answer:\newline(A) Yes\newline(B) No
  1. Substitute and check: First, we will substitute the point (4,8)(4,8) into the first equation and check if it holds true. The first equation is 2x+7y=12x + 7y = 1. If we substitute x=4x=4 and y=8y=8, we get 24+78=12\cdot 4 + 7\cdot 8 = 1.
  2. Result of substitution: After performing the calculation, we find that 8+56=648 + 56 = 64, which is not equal to 11. Therefore, the point (4,8)(4,8) does not satisfy the first equation.
  3. Conclusion: Since the point (4,8)(4,8) does not satisfy the first equation, there is no need to check the second equation. We can conclude that (4,8)(4,8) is not a solution to the system of equations.

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