91Ó°ÊÓ

Graph each pair of equations on one set of axes. $$ y=\frac{1}{2} x^{2} \text { and } y=-\frac{1}{2} x^{2} $$

Graph. $$ y=3.75 $$

Graph. List the slope and y-intercept. $$ f(x)=-0.5 x $$

Write interval notation for each of the following. Then graph the interval on a number line. $$ \\{x \mid 6

Graph. List the slope and y-intercept. $$ y=2 x-5 $$

Graph. List the slope and y-intercept. $$ y=7 $$

Graph. List the slope and y-intercept. $$ y=-5 $$

Write interval notation for each of the following. Then graph the interval on a number line. $$ \\{x \mid x \geq 12.5\\} $$

a) Find the exponential function that best fits the following data. $$\begin{array}{|c|c|}\hline & \text { PRICE OF ONE SHARE } \\\\\text { YEARS } & \text { OF STARBUCKS STOCK } \\\\\text { SINCE 2010 } & \text { AT BEGINNING OF } \\\\\text { JANUARY } \\\\\hline 0 & \$ 20.59 \\\1 & \$ 30.21 \\\2 & \$ 46.61 \\\3 & \$ 55.39 \\\4 & \$ 76.17 \\\\\hline\end{array}$$ b) Graph the scatterplot and the function on the same set of axes. c) Use the function to estimate the price of one share of Starbucks stock in 2018 . d) What other models also fit this data? Which model best predicts the price of one share of Starbucks stock in future years? Why?

Find the slope and \(y\) -intercept. $$ y-3 x=6 $$