Solve then show the answers on a graph. 2. y + 2x = 12 for D = {2, 3, 4}   

3. 3x − 3y = 9 for D = {0 ≤ x ≤ 8}   

4. The function h(d) = 2d + 4.3 relates the h height of the water in a fountain in feet to the d diameter of the pipe carrying the water. Graph

Determine the domain for each function. Then graph the function.
    1.    for R  {5, 6, 7, 8}
        D   
    2.    6x  3y  12 for R  {4 ≤ y ≤ 8}
        D 
    3.    3x  y  4 for R  {4 ≤ y ≤ 8}
        D 
Solve.
    4.    A car travels at a speed of 25 miles per hour. The d distance it travels in h hours is given by the equation d  25h. Write the equation as a function. Use a calculator to graph the function for the domain {0 ≤ h ≤ 5}. What is the meaning of the point (3.5, 87.5) on the graph?
        Function:         Explain:    
    5.    The formula for finding the distance traveled by a free-falling object is
D  16t2, where t is the time in seconds. Use a calculator to graph this function for the domain {1, 2, 3, 4, 5, 6}. Find the range. Use the graph
to find how much time it takes the object to fall 300 feet.
        Range:
        Explain:    
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