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Is (3,7)(3,7) a solution to this system of equations?\newlinex+y=10x + y = 10\newline9x+6y=69x + 6y = 6\newlineChoices:\newline(A)yes\newline(B)no

Full solution

Q. Is (3,7)(3,7) a solution to this system of equations?\newlinex+y=10x + y = 10\newline9x+6y=69x + 6y = 6\newlineChoices:\newline(A)yes\newline(B)no
  1. Substitute and Verify: First, we will substitute the point (3,7)(3,7) into the first equation and check if it holds true. The first equation is x+y=10x + y = 10. If we substitute x=3x=3 and y=7y=7, we get 3+7=103 + 7 = 10.
  2. First Equation Check: After performing the calculation, we find that 3+7=103 + 7 = 10, which is true. Therefore, the point (3,7)(3,7) satisfies the first equation.
  3. Second Equation Check: Next, we will substitute the point (3,7)(3,7) into the second equation and check if it holds true. The second equation is 9x+6y=69x + 6y = 6. If we substitute x=3x=3 and y=7y=7, we get 93+67=69\cdot 3 + 6\cdot 7 = 6.
  4. Second Equation Result: After performing the calculation, we find that 27+42=6927 + 42 = 69, which is not equal to 66. Therefore, the point (3,7)(3,7) does not satisfy the second equation.
  5. Not a Solution: Since the point (3,7)(3,7) does not satisfy both equations, it is not a solution to the system of equations.

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