Published
- 2 min read
Question: Solve the system by graphing. 6x + 2y = -12 x - 2y = -2 Use the graphing tool to graph the…
Solve the system by graphing.
6x + 2y = -12 x - 2y = -2
Use the graphing tool to graph the system.
Click to enlarge graph
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. The system has a single solution. The solution set is \((-2, 0)\).
B. There are infinitely many solutions and the equations are dependent. The solution set is \((x, y) | 6x + 2y = -12\).
Solution
To solve the system of equations: \[ \begin{cases} 6x + 2y = -12 & \\ x - 2y = -2 & \end{cases} \] First, add both equations to eliminate \( y \): \[ 6x + 2y + x - 2y = -12 + (-2) \] Simplifying the equation: \[ 7x = -14 & \] Solve for \( x \): \[ x = -2 & \] Next, substitute \( x = -2 \) into the second equation: \[ -2 - 2y = -2 & \] Solve for \( y \): \[ -2y = 0 & \] \[ y = 0 & \] Therefore, the solution to the system is \((-2, 0)\).