91Ó°ÊÓ

Find an expression for \(f(x)\) and state its domain. \(f\) is a function that takes a real number \(x\) and performs the following three steps in the order given: (1) add \(3 ;\) (2) multiply by \(2 ;\) (3) divide by 4 .

Graph the given relation. $$ \\{(-2,0),(-1,1),(-1,-1),(0,2),(0,-2),(1,3),(1,-3)\\} $$

Find the indicated intersection or union and simplify if possible. Express your answers in interval notation. $$ (-1,5] \cap[0,8) $$

Find an expression for \(f(x)\) and state its domain. \(f\) is a function that takes a real number \(x\) and performs the following three steps in the order given: (1) divide by \(4 ;(2)\) add \(3 ;\) (3) multiply by 2 .

In Exercises \(1-12\), sketch the graph of the given function. State the domain of the function, identify any intercepts and test for symmetry. $$ f(x)=x^{2}+1 $$

Use the pair of functions \(f\) and \(g\) to find the following values if they exist. $$ \begin{array}{lll} \bullet(f+g)(2) & \bullet(f-g)(-1) & \bullet(g-f)(1) \\ \bullet(f g)\left(\frac{1}{2}\right) & \bullet\left(\frac{f}{g}\right)(0) & \bullet\left(\frac{g}{f}\right)(-2) \end{array} $$ $$ f(x)=x^{2}-x \text { and } g(x)=12-x^{2} $$

Determine whether or not the relation represents \(y\) as a function of \(x .\) Find the domain and range of those relations which are functions. $$ \\{(-3,0),(-7,6),(5,5),(6,4),(4,9),(3,0)\\} $$

Suppose (2,-3) is on the graph of \(y=f(x) .\) In Exercises \(1-18,\) use Theorem 1.7 to find a point on the graph of the given transformed function. $$ y=f(x)-1 $$

Find the indicated intersection or union and simplify if possible. Express your answers in interval notation. $$ (-1,1) \cup[0,6] $$

Graph the given relation. $$ \\{(m, 2 m) \mid m=0,\pm 1,\pm 2\\} $$