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Which of the following is not a solution to the system of linear equations below? 5y=3x+15 6x=10y-30 A. (5, 6) B. (–15, 12) C. (0, 3) D. (–10, –3)

User Adam Lee
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2 Answers

2 votes

Final answer:

To solve the system of linear equations, we need to find the values of x and y that satisfy both equations simultaneously. Let's substitute the answer choices into the equations to determine if they are solutions or not. The answer is option A. (5, 6) is not a solution to the system of linear equations.

Step-by-step explanation:

To solve the system of linear equations, we need to find the values of x and y that satisfy both equations simultaneously. Let's solve the equations:

Equation 1: 5y = 3x + 15

Equation 2: 6x = 10y - 30

By rearranging Equation 1, we get y = (3/5)x + 3. Subtracting 3x/5 from both sides.

By rearranging Equation 2, we get x = (5/3)y + 5. Adding 5y/3 to both sides.

If we substitute the given answer choices into the equations and both equations are satisfied, then the answer choice is a solution to the system of linear equations. If the answer choice does not satisfy both equations, then it is not a solution.

Let's substitute the answer choices into the equations:

A. (5, 6): Substituting, we get 6 = 9 + 3, which is not true. Hence, (5, 6) is not a solution.

B. (-15, 12): Substituting, we get 60 = 60, which is true. Hence, (-15, 12) is a solution.

C. (0, 3): Substituting, we get 15 = 15, which is true. Hence, (0, 3) is a solution.

D. (-10, -3): Substituting, we get -15 = -15, which is true. Hence, (-10, -3) is a solution.

So, the answer is option A. (5, 6) is not a solution to the system of linear equations.

User Mumtaz
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5.3k points
5 votes
Option B is not a solution.

5y=3x+15
5(12)=3(-15)+15
60=-45+15
60≠-30


Hope I didn't mess up for your sake!
User Ojas Mohril
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6.8k points