What represents the line that passes through the point (-2,2) and is perpendicular to y=1/2x+8

Why are young eastern european democracies at an increased risk for turmoil during a global recession? a) anger against increased democracy b) failure of the free market system c) government corruption d) lack of from the e.u.

What has been a consequence of human economic development in advancing nations? a) subsistenceb) conservationc) photosynthesisd) pollution

According to the population pyramid, in 2000 china had about 120 million people in which age-group