Pre-Calculus

3. ,how many rows and columns are in a matrix.
6. ,method of writing a vector's terminal point which presupposes that its initial point is the origin.
9. ,a vector with magnitude 1.
11. ,is a method used to write out a long sum in a concise way
14. ,the fixed point used to define a parabola.
15. ,the set of coplanar points such that the sum of the distances from each point to two distinct coplanar points (called the foci) is constant.
16. ,the line passing through the vertex of a parabola about which the graph of the parabola is symmetric
19. ,the coefficient in the term of a polynomial containing the variable raised to its highest power.
20. ,the sum of the terms of a sequence.

1. , a part of the circumference of a circle or other curve..
2. ,ordered list of numbers
4. ,a relation in which every input results in one and only one output
5. ,two vectors which are perpendicular to one another.
7. ,the fixed distance between the center of a circle and any point on that circle.
8. ,describes a vector whose initial point lies on the origin.
10. ,a set of coplanar points equidistant from a fixed point called the center.
12. ,the small number outside of a radical sign.
13. ,angles in standard position that share the same terminal ray.
17. ,quantity that possesses both magnitude and direction.
18. ,the two fixed focus points which define an ellipse.