In Exercises 55–64, use the vertical line test to identify graphs in which y is a function of x.

Find the value of the function for the given value of x. See Example 3. ƒ(x)=[[x]], for x=x-(-π)

Let ƒ(x)=-3x+4 and g(x)=-x^2+4x+1. Find each of the following. Simplify if necessary. See Example 6. ƒ(1/3)

In Exercises 55–64, use the vertical line test to identify graphs in which y is a function of x.

Let ƒ(x)=-3x+4 and g(x)=-x^2+4x+1. Find each of the following. Simplify if necessary. See Example 6. ƒ(-x)

In Exercises 71–74, determine whether each statement is true or false. If the statement is false, make the necessary change(s) to produce a true statement.The ordered pair (2, 5) satisfies 3y - 2x = - 4.

In Exercises 77–92, use the graph to determine a.the x-intercepts, if any; b. the y-intercept, if any; and e. the missing function values, indicated by question marks, below each graph.

In Exercises 77–92, use the graph to determine a. the function's domain; b. the function's range; c. the x-intercepts, if any; d. the y-intercept, if any; and e. the missing function values, indicated by question marks, below each graph.

Determine the largest open intervals of the domain over which each function is b) decreasing. See Example 9.