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 Related Terms
 Function:  A rule of matching elements of two sets of numbers in which an input value from the first set has only one output value in the second set.
Graph of a Function: The set of all the points on a coordinate plane whose coordinates makes the rule of function true.
Linear Equation: An equation whose solution is a straight line.
Linear Function: An equation in which the graphs of the solutions form a (non-vertical) line.
Solution: A number (or ordered pair of numbers, or set of numbers) that produces a true statement when substituted for the variable(s) in an equation or inequality.
Solving an Equation: Finding all the values of the variable(s) that make an equation true.
Quadratic Function: A function of degree 2 which has a graph that "turns around" once, resembling an umbrella-like curve that faces either rightside up or upside down. This graph is called a parabola.