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Question 10 - of 25 Step 1 of 1 Determine if the point \( (-2,-5) \) is the point of intersection for the given lines. In other words, is \( (-2,-5) \) the solution to the system of equations? \[ \begin{array}{r}-2 x+3 y=-19 \\ 5 x-3 y=-5\end{array} \] Answer 2 Points Nomit O The point \( (-2,-5) \) satisfies neither equation. It is not the point of intersection of the two lines. \( (-2,-5) \) satisfies one of the equations, but not both. It is not the point of intersection of the two lines. The point \( (-2,-5) \) satisfies both equations, so it is the solution to the system and the point of intersection of the two lines.

Ask by Harmon Olson. in the United States
Feb 03,2025

Real Tutor Solution

Tutor-Verified Answer

Answer

The point \( (-2, -5) \) does not satisfy either equation, so it is not the point of intersection of the two lines.

Solution

To determine whether the point \( (-2, -5) \) is the point of intersection for the given system of equations: \[ \begin{cases} -2x + 3y = -19 \\ 5x - 3y = -5 \end{cases} \] **Step 1: Substitute \( x = -2 \) and \( y = -5 \) into each equation.** 1. **First Equation:** \[ -2(-2) + 3(-5) = 4 - 15 = -11 \] The left side equals \(-11\), which does **not** equal \(-19\). 2. **Second Equation:** \[ 5(-2) - 3(-5) = -10 + 15 = 5 \] The left side equals \(5\), which does **not** equal \(-5\). **Conclusion:** Since the point \( (-2, -5) \) does **not** satisfy either of the two equations, it is **not** the solution to the system. Therefore, \( (-2, -5) \) is **not** the point of intersection of the two lines. **Correct Answer:** - **The point \( (-2,-5) \) satisfies neither equation. It is not the point of intersection of the two lines.**

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The Deep Dive

To determine if \( (-2,-5) \) is the point of intersection, we need to substitute \( x = -2 \) and \( y = -5 \) into both equations. For the first equation: \(-2(-2) + 3(-5) = 4 - 15 = -11\), which does not equal \(-19\). For the second equation: \(5(-2) - 3(-5) = -10 + 15 = 5\), which does not equal \(-5\). Thus, \( (-2,-5) \) satisfies neither equation! Stay sharp while solving equations! It's crucial to check both equations when determining if a point is a solution. A common mistake is to check only one equation and assume correctness, but each equation must hold true for a point to be an intersection. Don't skip that second check; it could save you embarrassment on tests!

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