Greatest month on line graph
Source: 1993 AMC 8 Problem 10
June 28, 2011
AMC
Problem Statement
This line graph represents the price of a trading card during the first months of .[asy]
unitsize(18);
for (int a = 0; a <= 6; ++a)
{
draw((4*a,0)--(4*a,10));
}
for (int a = 0; a <= 5; ++a)
{
draw((0,2*a)--(24,2*a));
}
draw((0,5)--(4,4)--(8,8)--(12,3)--(16,9)--(20,6)--(24,2),linewidth(1.5));label("",(2,0),S);
label("",(6,0),S);
label("",(10,0),S);
label("",(14,0),S);
label("",(18,0),S);
label("",(22,0),S);
label("",(12,10),N);label("\begin{tabular}{c}P \\ R \\ I \\ C \\ E \end{tabular}",(-2,5),W);
label("",(0,2),W);
label("",(0,4),W);
label("",(0,6),W);
label("",(0,8),W);
label("",(0,10),W);
[/asy]The greatest monthly drop in price occurred during