91Ó°ÊÓ

CHALLENGE Graph \(|y| < x\)

What is an equation of the line through \(\left(\frac{1}{2},-\frac{3}{2}\right)\) and \(\left(-\frac{1}{2}, \frac{1}{2}\right) ?\) A. \(y=-2 x-\frac{1}{2}\) B. \(y=-3 x\) C. \(y=2 x-\frac{5}{2}\) D. \(y=\frac{1}{2} x+1\)

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

Find the value of \(f(x)=-3 x+2\) when \(x=2\)

Find the \(x\)-intercept and the \(y\)-intercept of the graph of each equation. Then graph the equation. \(y=-2\)

Masao has a long-distance telephone plan where she pays 10\(\notin\) for each minute or part of a minute that she talks, regardless of the time of day. Graph a step function that represents this situation.

The total cost \(c\) in dollars to go to a fair and ride \(n\) roller coasters is given by the equation $$c=15+3 n$$ If the total cost was \(\$ 33\) , how many roller coasters were ridden? F. 6 G. 7 H. 8 J. 9

WASHINGTON MONUMENT The Washington Monument, in Washington, D.C. is 555 feet 5\(\frac{1}{8}\) inches tall and weighs \(90,854\) tons. The monument is topped by a square aluminum pyramid. The sides of the pyramid's base measure 5.6 inches, and the pyramid is 8.9 inches tall. Estimate the slope that a face of the pyramid makes with its base.

Find the \(x\)-intercept and the \(y\)-intercept of the graph of each equation. Then graph the equation. \(y=4\)

Masao has a long-distance telephone plan where she pays 10\(\notin\) for each minute or part of a minute that she talks, regardless of the time of day. How much would a call that lasts 9 minutes and 40 seconds cost?