The Infant Mortality $I$ , in a Country Is Related to the Country's GNP

Short Answer

The infant mortality, $I$ , in a country is related to the country's GNP (gross national product), $g$ . Some authors (Weld and Helms, 1971) have argued that the relationship is of the form $I=I_{0}+\frac{k}{g+a}$ , where $I_{0}, k$ , and $a$ are positive constants and $g \geq 0$ . For $I_{0}=3, k=8$ , and $a=4$ , the vertical asymptote of the graph of $I$ against $g$ is at $g=$ ------------ If there is no vertical asymptote, enter "none"