The resulting graph in polar coordinates of a function of the form a+b*sin(t) or a+b*cos(t) where |a| ≠ |b|

limit

The target value that terms in a sequence of numbers are getting closer to. This limit is not necessarily ever reached; the numbers in the sequence eventually get arbitrarily close to the limit

line

A continuous extent of length containing two or more points

line graph

A diagram showing a system of connections or interrelations between two or more things by using lines

line of best fit

A straight line used as a best approximation of a summary of all the points in a scatter-plot. The position and slope of the line are determined by the amount of correlation between the two, paired variables involved in generating the scatter-plot. This line can be used to make predictions about the value of one of the paired variables if only the other value in the pair is known.

line segment

A piece of a line with endpoints at both ends

line symmetry

If a figure can be divided by a line where both divisions are mirrors of each other, the figure has line symmetry. The line that divides the figure is the line of symmetry

linear

An equation or graph is linear if the graph of the equation is a straight line

linear function

A function of the form f(x) = mx + b where m and b are some fixed numbers. The names "m" and "b" are traditional. Functions of this kind are called "linear" because their graphs are straight lines

linear regression

An attempt to model the relationship between two variables by fitting a linear equation to observed data. One variable is considered as the independent variable, and the other is considered as the dependent variable.

logarithm

The exponent of the power to which a base number must be raised to equal a given number. An example: 2 is the logarithm of 100 to the base 10. One can look at this way: 10 * 10 = 100, which is the same as 10^{2}, and 2 is the exponent referred to above