The data in the table give the percent of males and females who have completed 4 or more years of college education for selected years. Let $x$ represent the number of years since 1960 . Let $y$ represent the percent of men and the percent of women that completed 4 or more years of college.
\begin{array}{c|c|c|c}
\hline \text { Year } & x & \begin{array}{c}
\text { Percent, } y \\
\text { Men }
\end{array} & \begin{array}{c}
\text { Percent, } y \\
\text { Women }
\end{array} \\
\hline 1960 & 0 & 9.7 & 5.8 \\
\hline 1970 & 10 & 13.5 & 8.1 \\
\hline 1980 & 20 & 20.1 & 12.8 \\
\hline 1990 & 30 & 24.4 & 18.4 \\
\hline 2000 & 40 & 27.8 & 23.6 \\
\hline 2005 & 45 & 28.9 & 26.5 \\
Plot the data points for men and for women on the same graph.
b. Is the percentage of men with 4 or more years of college increasing or decreasing?
c. Is the percentage of women with 4 or more years of college increasing or decreasing?
\end{array}
(IMAGAE CAN'T COFFEE