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Vertical line test
The _____ says that if you can find a vertical line passing through more than one point of a graph of a relation, them the relation is not a function. otherwise, the relation is a function
Solution of an equation in two variables
A _____ in x and y is an ordered pair (x, y) that produces a true statement when the values of x and y are substituted into the equation
Graph of an equation in two variables
The ______ is the set of points in a coordinate plane that represent all the solutions of the equation
An equation written in _____ uses f(x) to represent the output of the function f for an input of x
Solution of a linear system
A _____ in two variables is an ordered pair that is a solution of each equation in the system.
A _____ in two variables is the result of replacing the equal sign in a linear equation with <, ≤, >, ≥.
Solution of a linear inequality
It is an ordered pair (x, y) that makes the inequality true when the values of x and y are substituted into the inequality
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