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Step-by-step explanation:

Direct variation           The relationship between two variables such that y = kx

                                     if k is a nonzero number. Also,

Domain                        The set of all x-values in a relation

Function                       In this relationship between two quantities, for each

                                      input there is exactly one output.

Graph                           This is the image obtained by plotting all the points

                                      that satisfy an equation or inequality. A visual

Greatest integer function The greatest integer less than or equal to the

                                            given number.

Relation                        This is any set of ordered pairs (x, y). All functions

                                       are also these, but not all of these are functions.

Solution                         This is the result of solving an equation to find a

                                       value(s) for the variable(s) which make the

X-intercept                    This is a point at which a graph intersects the x-axis

Y-intercept                    This is the point at which a graph intersects the y-

                                      axis

Family of functions       A group of functions that have the same basic

                                     shape. -

Inputs                            The set of x values of a function, this is another

                                       name for domain

Outputs                         The set of y values of a function, this is another

                                       name for range.        

rounding to the nearest thousandth would be 452,000