<PRE><B>Question 473342</B>
I need help number 78 only ,the key number 79 is 73.5 percents
I know find slope and write equation
do not solve ,just help me what pair I can select to write equation, take me for ever to find what pair 
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If you constructed the dot-plot you saw that
the points do not lie on a line.  So using
2 points to find the equation will only give
you the equation for the line thru those 2
points.
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The problem requires that you develop a linear
regression equation for the set of data.
Your book may explain how to do that manually
or you may use a calculator to generate the
equation.  I used a TI-84 to get the following
equation: f(x) = -0.86x + 76.727
The f(x) for the year 2012 is f(32) = 73.975
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Cheers,
Stan H.</PRE>