Not a function: “one to many“. In other words, let’s say you had one x-value that maps to many y-values. For example, — in coordinate notation — (2,1) and (2,10). If the first number (the x-value) repeats, then you do not have a function. To put that another way, ...
Human airway epithelial (HAE) cellular models are widely used in applicative studies of the airway physiology and disease. In vitro expanded and differentiated primary HAE cells collected from patients seem to be an accurate model of human airway, offeri
But the College Board still has to make the test difficult to differentiate student skill levels, sothe SAT needs to test these concepts in strange ways. This trips up students who don't prepare, but it rewards students who understand the test well. Here's an example: Find the area of t...