91Ó°ÊÓ

match each function with its name. $$f(x)=\|x\|$$ $$\begin{array}{ll}{\text { (a) squaring function }} & {\text { (b) square root function }} \\ {\text { (c) cubic function }} & {\text { (d) linear function }} \\ {\text { (e) constant function }} & {\text { (f) absolute value function }}\end{array}$$ $$\begin{array}{l}{\text { (g) greatest integer function }} \\ {\text { (h) reciprocal function }} \\ {\text { (i) identity function }}\end{array}$$

Two functions \(f\) and \(g\) can be combined by the arithmetic operations of _____,_____,_____, and _____ to create new functions.

If the composite functions \(f(g(x))\) and \(g(f(x))\) both equal \(x,\) then the____________ function \(g\) is the

A relation that assigns to each element \(x\) from a set of inputs, or_____, exactly one element \(y\) in a set of outputs, or_____, is called a_____.

Fill in the blanks. An ordered pair \((a, b)\) is a_______of an equation in \(x\) and \(y\) when the substitutions \(x=a\) and \(y=b\) result in a true statement.

The simplest mathematical model for relating two variables is the_________variables \(y=m x+b .\)

An ordered pair of real numbers can be represented in a plane called the rectangular coordinate system or the _____ plane.

The point of intersection of the \(x\) - and \(y\) -axes is the_____, and the two axes divide the coordinate plane into four parts called _____.

Statisticians use a measure called the _________ of ________ ________ to find a model that approximates a set of data most accurately.

Fill in the blanks. The set of all solution points of an equation is the ______ of the equation.