Geometry

# 3D Coordinate Geometry - Intersection of Planes

State the relationship between the following two planes: \begin{aligned} -x + 3y -z &= 2 \\ x - 4y + z &= 2. \end{aligned}

What is the volume of the tetrahedron formed by the plane $6x + 3y + 4z - 72 = 0$ and the three coordinate planes?

If the following planes all intersect at the same line, what is the value of $a+ b:$ \begin{aligned} P_1 &: 3x + ay + 2z -2 =0 \\ P_2 &: 2x + by - 2z + a = 0 \\ P_3 &: 3x - y + 2z + b = 0? \end{aligned}

State the relationship between the following two planes: \begin{aligned} 2x - y + 2z &= -5 \\ x - 3y + 4z &= 3. \end{aligned}

State the relationship between the planes: \begin{aligned} 3x + y - 2z &= -4 \\ - 6x - 2y + 4z &= 1. \end{aligned}

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