How can we help?

You can also find more resources in our Help Center.

function

a mathematical relation such that each element of one set is associated with at least one element of another set

relation

A set of ordered pairs

dependent variable

a variable in a logical or mathematical expression whose value depends in the independent variable

independent variable

a variable whose values are independent of changes in the values of other variables

y-axis

the up-and-down axis of a graph

x-axis

the left-and-right axis of a graph

standard form

ax+by=c

slope-intercept form

y=mx+b

slope

the steepness of a line on a graph, equal to its vertical change divided by its horizontal change

y-intercept

the spot where a graph intersects the y-axis; the point where x=0

x-intercept

The spot where a graph intersects the x-axis; the point where y=0