“implying power dependence on GDP” means that the quantity on the Y-axis is the power function of GDP, i.e. GDP^x. It looks like Maternal deaths ~ GDP^(-2), that is for every order of magnitude increase in GDP we have two orders of magnitude decrease in maternal mortality. This is very different from the logarithmic dependence one obtains for straight lines in log-linear plots.
“implying power dependence on GDP” means that the quantity on the Y-axis is the power function of GDP, i.e. GDP^x. It looks like Maternal deaths ~ GDP^(-2), that is for every order of magnitude increase in GDP we have two orders of magnitude decrease in maternal mortality.
This is very different from the logarithmic dependence one obtains for straight lines in log-linear plots.