91Ó°ÊÓ

Write each equation in standard form. Identify A, B, and C. \(5 y=10 x-25\)

For Exercises 25 and \(26,\) use the following information. Namid is examining the calling card portion of his phone bill. A 4 -minute call at the night rate cost \(\$ 2.65 .\) A 10 -minute call at the night rate cost \(\$ 4.75\) . How much would it cost to talk for half an hour at the night rate?

Graph each function. Identify the domain and range. \(f(x)=\left\\{\begin{array}{r}{-x \text { if } x \leq 3} \\ {2 \text { if } x>3}\end{array}\right.\)

Graph each relation or equation and find the domain and range. Then determine whether the relation or equation is a function and state whether it is discrete or continuous. $$ \\{(3,4),(4,3),(6,5),(5,6)\\} $$

Find the slope of the line that passes through each pair of points. $$ (5,4),(-3,8) $$

Graph each function. Identify the domain and range. \(h(x)=\left\\{\begin{aligned}-1 & \text { if } x<-2 \\ 1 & \text { if } x>2 \end{aligned}\right.\)

Write each equation in standard form. Identify A, B, and C. \(4 x=8 y-12\)

Graph each relation or equation and find the domain and range. Then determine whether the relation or equation is a function and state whether it is discrete or continuous. $$ \\{(0,-1.1),(2,-3),(1.4,2),(-3.6,8)\\} $$

Use the equation \(d=180(c-2)\) that gives the total number of degrees \(d\) in any convex polygon with \(c\) sides. Find the number of degrees in a pentagon.

Graph all the points on the coordinate plane to the left of the graph of \(x=-2 .\) Write an inequality to describe these points.