Posted by **Samantha** on Sunday, April 8, 2012 at 2:55am.

Let L1 be the line with the vector equation r= (-2,3) +s(-1,3), seR. Let L2 be with the line with parametric equation x=3t+2, y=t-7, teR. Are L1 and L2 perpendicular? How do you know?

- Calculus -
**Reiny**, Sunday, April 8, 2012 at 8:04am
You have to look at their direction numbers

direction of L1 is (-1,3)

for L2, the direction is (3,1)

since (3,1)**⋅**(-1,3) = 0 , they are perpendicular.

## Answer this Question

## Related Questions

- Vectors - How would you write a vector equation for a line using parametric ...
- Calculus - Determine the equation of the line through the origin and the point P...
- Calculus - Verify if correct. Determine which line is parallel to the line with ...
- Discrete Math: Equations of Line in a Plane - I'm stuck on these questions. Can ...
- Math: Equations of Line in a Plane - I'm stuck on these questions. Can you ...
- Vectors - Determine the vector equation of a line passing through the point P(3,...
- calculus - A) Determine the vector equation of the plane that contains the ...
- Math 10 - 1 more question.... how would I make this equation perpendicular? The ...
- Calculus - Determine a vector equation for the line through the points (-1, 4) ...
- Calculus - Are the points P(1,2), Q(7,3) and R(-2,1) o the line with vector ...

More Related Questions