Math Problem Statement

Find the vector, AB. If A=(-2,6) and B=(3,9)

Solution

To find the vector AB\overrightarrow{AB}, we use the formula:

AB=BA=(xBxA,yByA)\overrightarrow{AB} = B - A = (x_B - x_A, y_B - y_A)

Given:

  • A=(2,6)A = (-2, 6)
  • B=(3,9)B = (3, 9)

Substitute the coordinates into the formula:

AB=(3(2),96)=(3+2,3)=(5,3)\overrightarrow{AB} = (3 - (-2), 9 - 6) = (3 + 2, 3) = (5, 3)

So, the vector AB\overrightarrow{AB} is:

AB=(5,3)\overrightarrow{AB} = (5, 3)

Would you like further details on vector operations or have any questions?

Here are 5 related questions that build on this concept:

  1. How do you find the magnitude of a vector given its components?
  2. What is the difference between a vector and a scalar quantity?
  3. How would you determine the direction angle of vector AB\overrightarrow{AB}?
  4. How would you find a unit vector in the same direction as AB\overrightarrow{AB}?
  5. How do you calculate the dot product of two vectors?

Tip: When subtracting coordinates to find a vector, remember that order matters: AB\overrightarrow{AB} is different from BA\overrightarrow{BA}, as they point in opposite directions.

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Math Problem Analysis

Mathematical Concepts

Vector Operations
Coordinate Geometry

Formulas

Vector formula: \( \overrightarrow{AB} = (x_B - x_A, y_B - y_A) \)

Theorems

Vector Subtraction

Suitable Grade Level

Grades 9-10