Math Problem Statement

find a position vector that is parralel to the line x = 4 + 7t y= 5 - 3t z = 2t

Solution

The given parametric equations of the line are:

x=4+7t,y=53t,z=2tx = 4 + 7t, \quad y = 5 - 3t, \quad z = 2t

A vector parallel to the line can be obtained by looking at the coefficients of tt in these parametric equations, because the direction of the line is determined by these coefficients.

For xx, yy, and zz, the coefficients of tt are 77, 3-3, and 22 respectively.

Therefore, the direction vector (which is also parallel to the line) is:

v=7,3,2\mathbf{v} = \langle 7, -3, 2 \rangle

This is the position vector parallel to the given line.


Would you like further details or have any questions?

Here are 5 related questions:

  1. How do you find the parametric equations of a line given two points?
  2. What is the dot product of two vectors and how is it used to find if they are parallel?
  3. Can you find a unit vector parallel to the vector 7,3,2\langle 7, -3, 2 \rangle?
  4. How would you determine if two vectors are perpendicular?
  5. What is the scalar projection of one vector onto another?

Tip: When finding a vector parallel to a line, always focus on the coefficients of the parameter from the parametric form of the line.

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Math Problem Analysis

Mathematical Concepts

Vector Algebra
Parametric Equations

Formulas

Position vector from parametric equation: v = <dx/dt, dy/dt, dz/dt>

Theorems

Direction vectors in parametric equations

Suitable Grade Level

Grades 10-12