91Ó°ÊÓ

Graph each equation using the slope and \(y\) -intercept. $$y=\frac{1}{2} x$$

During a workout, a target heart rate \(y\) in beats per minute is represented by \(y=0.7(220-x),\) where \(x\) is a person's age. In which quadrant(s) would the graph of \(y=0.7(220-x)\) make sense? Explain your reasoning.

Write an equation in slope-intercept form for the line passing through each pair of points. $$(0,0) \text { and }(-1,1)$$

Use the following information. The altitude in feet \(y\) of a hang glider who is slowly landing can be given by \(y=300-50 x,\) where \(x\) represents the time in minutes. Graph the equation using the slope and \(y\) -intercept.

Find four solutions of each equation. Write the solutions as ordered pairs. $$x-y=10$$

Find product. Write in simplest form. \(-\frac{14}{15} \cdot-\frac{10}{28}\)

Find product. Write in simplest form. \(\frac{14}{15} \cdot 3 \frac{2}{7}\)

Write an equation in slope-intercept form for the line passing through each pair of points. $$(4,2) \text { and }(-8,-16)$$

Use the following information. The altitude in feet \(y\) of a hang glider who is slowly landing can be given by \(y=300-50 x,\) where \(x\) represents the time in minutes. State the slope and \(y\) -intercept of the graph of the equation and describe what they represent.

In \(2005,\) a movie actor was to pay 10 percent commission to his management company for work negotiated on his behalf. The commission amount totaled \(\$ 660,000\). How much money did he earn from his movies?