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27 Triangle \( M A X \) has vertices with coordinates \( M(-5,-2), A(1,4) \), and \( X(4,1) \). Determine and state the area of \( \triangle M A X \).

Ask by Reid Paul. in the United States
Jan 22,2025

Real Tutor Solution

Tutor-Verified Answer

Answer

The area of triangle \( \triangle MAX \) is 18 square units.

Solution

To find the area of triangle \( \triangle MAX \) with vertices \( M(-5, -2) \), \( A(1, 4) \), and \( X(4, 1) \), we can use the **shoelace formula**. The shoelace formula for the area of a triangle with vertices \((x_1, y_1)\), \((x_2, y_2)\), and \((x_3, y_3)\) is: \[ \text{Area} = \frac{1}{2} \left| x_1(y_2 - y_3) + x_2(y_3 - y_1) + x_3(y_1 - y_2) \right| \] Let's apply this step-by-step: 1. **Identify the coordinates:** - \( M(-5, -2) \): \( x_1 = -5 \), \( y_1 = -2 \) - \( A(1, 4) \): \( x_2 = 1 \), \( y_2 = 4 \) - \( X(4, 1) \): \( x_3 = 4 \), \( y_3 = 1 \) 2. **Plug the values into the formula:** \[ \text{Area} = \frac{1}{2} \left| (-5)(4 - 1) + 1(1 - (-2)) + 4(-2 - 4) \right| \] 3. **Calculate each term:** \[ (-5)(3) = -15 \] \[ 1(3) = 3 \] \[ 4(-6) = -24 \] 4. **Sum the terms:** \[ -15 + 3 - 24 = -36 \] 5. **Take the absolute value and divide by 2:** \[ \text{Area} = \frac{1}{2} \times 36 = 18 \] **Therefore, the area of \( \triangle MAX \) is 18 square units.** **Answer:** The area of triangle \( \triangle MAX \) is 18 square units.

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The Deep Dive

To find the area of triangle \( M A X \) with vertices at \( M(-5,-2) \), \( A(1,4) \), and \( X(4,1) \), we can use the formula for the area of a triangle given by the coordinates of its vertices: \[ \text{Area} = \frac{1}{2} \left| x_1(y_2 - y_3) + x_2(y_3 - y_1) + x_3(y_1 - y_2) \right| \] Substituting the coordinates: - \( M(x_1, y_1) = (-5, -2) \) - \( A(x_2, y_2) = (1, 4) \) - \( X(x_3, y_3) = (4, 1) \) We can plug these values into the formula: \[ \text{Area} = \frac{1}{2} \left| -5(4 - 1) + 1(1 + 2) + 4(-2 - 4) \right| \] \[ = \frac{1}{2} \left| -5(3) + 1(3) + 4(-6) \right| \] \[ = \frac{1}{2} \left| -15 + 3 - 24 \right| \] \[ = \frac{1}{2} \left| -36 \right| \] \[ = \frac{1}{2} \times 36 = 18 \] Thus, the area of triangle \( M A X \) is \( \boxed{18} \).

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