State if the vectors a and b are perpendicular, parallel, or neither. If a and b are parallel, state whether they point in the
same direction or in opposite directions.
-a = 2, -2 , b = 4, 4
A) Parallel, same directions
B) Perpendicular
C) Parallel, opposite directions
D) Neither

Question

Quizplus · Accepted Answer

Two vectors are perpendicular if their dot product equals zero. The dot product of vectors a = (2, -2) and b = (4, 4) is 2*4 + (-2)*4 = 8 - 8 = 0, indicating that they are perpendicular.

State If the Vectors a and B Are Perpendicular, Parallel