Given the system of equations, what is the solution? \( \begin{array}{l}3 x-2 y+10=0 \\ 5 y=4 x+8 \\ \{(-34 / 7,-16 / 7)\} \\ \{(-34 / 7,16 / 7)\} \\ \{(34 / 7,-16 / 7)\}\end{array} \)
Upstudy AI Solution
Answer
Solution
Answered by UpStudy AI and reviewed by a Professional Tutor


Mind Expander
To solve the system of equations, let's first rearrange both equations to make them easier to work with. 1. The first equation can be rearranged as: \( 3x - 2y = -10 \) or \( 3x = 2y - 10 \). 2. The second equation is: \( 5y = 4x + 8 \) or \( 5y - 4x = 8 \). Now we can solve for one variable in terms of the other. Let's solve the first equation for \(y\): \[ 2y = 3x + 10 \implies y = \frac{3}{2} x + 5. \] Next, substitute this expression for \(y\) into the second equation: \[ 5\left(\frac{3}{2} x + 5\right) - 4x = 8. \] Expanding this gives: \[ \frac{15}{2} x + 25 - 4x = 8. \] To eliminate the fraction, we can multiply the entire equation by 2: \[ 15x + 50 - 8x = 16 \implies 7x + 50 = 16 \implies 7x = -34 \implies x = -\frac{34}{7}. \] Now, plug \(x\) back into the equation for \(y\): \[ y = \frac{3}{2} \left(-\frac{34}{7}\right) + 5 = -\frac{102}{14} + 5 = -\frac{102}{14} + \frac{70}{14} = -\frac{32}{14} = -\frac{16}{7}. \] So the solution to the system of equations is: \[ \boxed{\left(-\frac{34}{7}, -\frac{16}{7}\right)}. \] It appears that option \( \{(-34 / 7,-16 / 7)\} \) is indeed the correct choice!