Math Problem Statement
Solve the following system of linear equations: 5x + 6y = 0, -9x + 7y = 0. If there is one solution, give its coordinates. If the system has infinitely many solutions, enter 'z' in the answer blank for x and enter a formula for y in terms of z. If no solutions, enter 'none'.
Solution
The system of equations shown in the image is:
5x + 6y &= 0 \\ -9x + 7y &= 0 \end{aligned}$$ Let's solve this system step by step. ### Step 1: Eliminate one variable We can use the method of elimination to eliminate one of the variables. Let's multiply the first equation by 9 and the second equation by 5 so that the coefficients of $$x$$ are opposites: $$9(5x + 6y) = 9 \cdot 0 \quad \text{and} \quad 5(-9x + 7y) = 5 \cdot 0$$ This simplifies to: $$45x + 54y = 0$$ $$-45x + 35y = 0$$ ### Step 2: Add the two equations Now, add the two equations to eliminate $$x$$: $$(45x + 54y) + (-45x + 35y) = 0 + 0$$ This simplifies to: $$89y = 0$$ ### Step 3: Solve for $$y$$ $$y = 0$$ ### Step 4: Solve for $$x$$ Now that we know $$y = 0$$, substitute this value into one of the original equations. Let's use the first equation: $$5x + 6(0) = 0$$ This simplifies to: $$5x = 0$$ $$x = 0$$ ### Final Solution: The system has a unique solution: $$x = 0, \quad y = 0$$ There is only one solution, and the coordinates are $$(0, 0)$$. Would you like more details on any step, or do you have any questions? Here are 5 related questions to further your understanding: 1. What other methods can be used to solve this system of equations? 2. How would the solution change if there were no solutions? 3. Can this method be applied to nonlinear systems? 4. What does it mean if a system of equations has infinitely many solutions? 5. How can you verify the solution to a system of equations? **Tip:** Always double-check your solution by substituting the values of $$x$$ and $$y$$ back into both original equations!Ask a new question for Free
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Math Problem Analysis
Mathematical Concepts
Algebra
Linear Systems
Solving Equations
Formulas
Linear equation: ax + by = c
Theorems
Elimination method
Substitution method
Suitable Grade Level
Grades 10-12
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