11. \( \left\{\begin{array}{l}y=\frac{2}{3} x+3 \\ y=-2 x-5\end{array}\right. \)
Upstudy AI Solution
Answer
Solution

Sign in to Unlock Answers for Free!
A Learning Platform Trusted by Millions of Real Students and Teachers.

Answered by UpStudy AI and reviewed by a Professional Tutor
Beyond the Answer
To solve the system of equations, we can find the point where the two lines intersect. Setting the two equations equal to each other gives us: \[ \frac{2}{3}x + 3 = -2x - 5 \] Multiplying everything by 3 to eliminate the fraction leads to: \[ 2x + 9 = -6x - 15 \] Now, add \(6x\) to both sides: \[ 8x + 9 = -15 \] Then subtract 9 from both sides: \[ 8x = -24 \] Dividing by 8 gives us \(x = -3\). Now, plug \(x\) back into either equation to find \(y\). Using the first equation: \[ y = \frac{2}{3}(-3) + 3 = -2 + 3 = 1 \] So, the solution to this system of equations is the point \((-3, 1)\). --- Did you know that systems of linear equations have been around since ancient times? The methods for solving them date back to the Babylonians around 2000 BC, who used a form of algebra to solve problems involving unknowns. Fast forward to today, and we’re solving them with methods like substitution and elimination—what a journey through numbers! If you've ever tried to solve a system of equations only to end up with a contradiction (like \(0 = 1\)), don’t be discouraged! That means the lines are parallel and have no solutions. And if you end up with a true statement (like \(0 = 0\)), you’ve got infinitely many solutions because the lines are the same. Just keep practicing, and you'll be a pro in no time!