Is the following relation a function
{(-6,-3) , (-6,-1) , (-6,5),(-6,8)

The business cycle is the periodic but irregular up-and-down movement in economic activity, measured by fluctuations in real gross domestic product (gdp) and other macroeconomic variables. a business cycle is typically characterized by four phases—recession, recovery, growth, and decline—that repeat themselves over time. economists note, however, that complete business cycles vary in length. the duration of business cycles can be anywhere from about two to twelve years, with most cycles averaging six years in length. some business analysts use the business cycle model and terminology to study and explain fluctuations in business inventory and other individual elements of corporate operations. but the term "business cycle" is still primarily associated with larger (industry-wide, regional, national, or even international) business trends.

Henry m. leland (1843-1932), president of cadillac motor carcompany in 1908, known as a master of precision frederick bennett, the british agent for cadillac motor carcompany who convinced the royal automobile club to runthe standardization test at brooklands, england henry ford (1863-1947), founder of ford motor company whointroduced the moving assembly line into the automobileindustry in 1913

The believe the answer is a.

The answer is b as in boy