Answer
A strong negative linear relationshipship
Work Step by Step
Calculate the means
$\bar{x}=\frac{1+5+3+10+7+6}{6}\approx 5.333$
$\bar{y}=\frac{500+100+300+50+75+80}{6}\approx 184.17$
Compute the correlation coefficient
$r$:
$r=\frac{\sum(x-\bar{x})(y-\bar{y})}{\sqrt{\sum(x-\bar{x})^2\sum(y-\bar{y})^2}}\approx -0.883$
The correlation coefficient is $t\approx -0.883$, indicating a strong negative relationship between years since graduation and contributions.
