Jump.
A function has a jump at a point where its limits from right and left both exist but do not coincide.

Law of excluded middle.
One of the two: either a statement is true or it is false. There's nothing in-between. An axiom of 2-valued logic.

Like terms
Terms that have the same variables raised to the same exponent. e.g. 3x2 and -2x2.

Linear equation
An equation whose graph is a line, that is, an equation that has a degree of one.
e.g. y = 3x - 2

Line of symmetry
A line that divides a figure into two parts, each a mirror image of the other.

Least Common Multiple,LCM, [a, b]
A number, M, is a common multiple of a set of numbersif each of the numbers in the set is a divisor of M. Ex.30 is a common multiple of 3 and 5 since both 3 and 5are divisors of 30. The least common multiple of a setof numbers is the smallest such number. The leastcommon multiple, LCM of 3 and 5, is 15 or, [3,5] =15.

Lowest Terms

An expression (ratio or fraction) is said to be in lowestterms if the greatest common factor, GCF, of the numerator and denominator is one (1).