A relation contains the points (1,2), (2,-1), (3,0), (4,1) and (5,-1). Which statement accurately describes this relation? The relation does not represent y as a function of x, because each value of x is associated with a single value of y.
The relation does not represent y as a function of x, because each value of x is associated with a single value of y.

The relation represents y as a function of x, because one value of y is associated with two values of x.
The relation represents y as a function of x, because one value of y is associated with two values of x.

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.

points

explanation:

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.