1.
a rectangular array of numbers. among their many uses are data storage, transformations, and linear algebra.
2.
a listing of events and the number of times each event occurs
3.
a sequence in which the ratio of consecutive terms is a constant.
4.
any function or relation whose graph is a line.
5.
the side opposite the right angle in a right triangle.

a.
frequency tables
b.
geometric sequence
c.
hypotenuse
d.
linear functions and relations
e.
matrix (matrices)