Solve each equation by graphing.
The solution of the equation is .
Substitute 0 for x and find the value of y.
Therefore, one of the point that satisfies the equation is
Substitute for x and find the value of y.
Therefore, the other point that satisfies the equation is
Draw the graph of the equation by using the information that the graph of the equation is a line passing through the points and .
Therefore, the graph of the equation is:
The solution of the equation by graphing can be obtained by finding the value of x where the graph of intersects the x-axis.
From the graph of , it can be noticed that the graph of intersects the x-axis at the point .
Therefore, the solution of the given equation is .
The number of people who watch a singing competition can be given by , where represents the number of people in millions who saw the show and is the number of potential viewers in millions.
a. Make a table of values for the points .
b. Graph the equation.
c. Use the graph to estimate the number of people who saw the show if there are 14 million potential viewers.
d. Explain why it would not make sense for to be a negative number.
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