Equation of Plane Through Origin & Perpendicular to Vector (1,-2,5)

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In summary, the equation of a plane passing through the origin and perpendicular to the vector (1,-2,5) is x - 2y + 5z = 0. This is determined by the normal vector of the plane and can be graphed in three dimensions. The perpendicularity of the plane and the vector is determined by the dot product of their normal vectors, and there is a unique equation for such a plane.
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find the equation of the plane through the origin and perpendicular to the vector (1,-2,5). this is the only relevant equation i have found $a(x-x_0)+b(y-y_0)+c(x-x_0)=0$
 
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  • #2
nevermind. i got it.
 

1. What is the equation of a plane through the origin and perpendicular to the vector (1,-2,5)?

The equation of the plane can be written as x - 2y + 5z = 0. This is because the normal vector of the plane is (1,-2,5), and any point on the plane must satisfy the equation a(x - x0) + b(y - y0) + c(z - z0) = 0, where (x0, y0, z0) is a point on the plane and (a,b,c) is the normal vector.

2. How do you know that the plane is passing through the origin?

Since the equation of the plane is x - 2y + 5z = 0, it can be seen that when all variables are equal to 0, the equation is satisfied. Therefore, the point (0,0,0), which is the origin, is a point on the plane, indicating that the plane passes through the origin.

3. Can you graph the equation of the plane?

Yes, the equation of the plane can be graphed in three dimensions. The plane will appear as a flat surface passing through the origin, perpendicular to the vector (1,-2,5).

4. How is the perpendicularity of the plane and the vector determined?

The perpendicularity of the plane and the vector is determined by the dot product of the normal vector of the plane and the given vector. If the dot product is equal to 0, then the two vectors are perpendicular.

5. Is there a unique equation for a plane passing through the origin and perpendicular to a vector?

Yes, there is a unique equation for a plane passing through the origin and perpendicular to a given vector. This is because the normal vector of a plane is unique, and any point on the plane can be used to determine the equation using the formula mentioned in the answer to the first question.

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