91Ó°ÊÓ

Use the point on the line and the slope of the line to find three additional points through which the line passes. \(\begin{array}{ll}\text { Point } & \text { Slope }\end{array}\) \((5,-2) \quad m=0\)

Determine whether the equation represents \(y\) as a function of \(x\). \(x^{2}+y^{2}=4\)

Describe the increasing and decreasing behavior of the function. Find the point or points where the behavior of the function changes. \(f(x)=x^{2 / 3}\)

Evaluate the function for \(f(x)=2 x+1\) and \(g(x)=x^{2}-2\) \((f g)(-6)\)

Use the point on the line and the slope of the line to find three additional points through which the line passes. \(\begin{array}{ll}\text { Point } & \text { Slope }\end{array}\) \((-3,4)\) \(m=0\)

An item that sells for $$\$ 145.99$$ has a sales tax of $$\$ 10.22$$ (a) Find a mathematical model that gives the amount of sales tax \(y\) in terms of the retail price \(x\). (b) Use the model to find the sales tax on a purchase that has a retail price of \(\$ 540.50\).

Determine whether the equation represents \(y\) as a function of \(x\). . \(x=y^{2}\)

Describe the increasing and decreasing behavior of the function. Find the point or points where the behavior of the function changes. \(y=x \sqrt{x+3}\)

Find \(y\) such that the distance between the points is 20 . \((-15, y),(-3,-7)\)

Evaluate the function for \(f(x)=2 x+1\) and \(g(x)=x^{2}-2\) \(\left(\frac{f}{g}\right)(5)\)