There are 52 white keys on a piano. The frequency produced when a key is struck is the number of vibrations per second the key's string makes.

Describe the pattern in the relation.

Write an equation of the direct variation that includes the given point. $(-28,4)$

Write a function rule for each table.

What do you notice about the points on your graph?

Graph the ordered pairs (term number, term) on a coordinate plane.

Complete the table at the right for an arithmetic sequence.

Find the mean, median, mode, and range.

$$\begin{array}{llllllll}34 & 33 & 35 & 33 & 32 & 35 & 34 & 32\end{array}$$

Write an equation of the direct variation that includes the point $(-1,-4)$. Show your work.

Write an equation of the direct variation that includes the given point. $(7,11)$

The scale of a map is $1 \mathrm{~cm}: 16 \mathrm{~km}$. Find the actual distance corresponding to each map distance. $8.5 \mathrm{~cm}$

Suppose $y$ varies inversely with $x$. Write an equation for the inverse variation. $y=3.5$ when $x=2.2$

Write a function rule for each situation. the total distance $d(n)$ traveled in $n$ hours at a constant speed of $60 \mathrm{mi} / \mathrm{h}$

Find the range of each function when the domain is $\{-3,-1.5,0,1,4\}$. $r=4 t^2+5$

Is each equation a direct variation? If it is, find the constant of variation. $-4+7 x+4=3 y$