Determine+whether+function+is+linear+or+not

====__//Linear//__ is a __//straight//__ line. __//Non-linear//__ is __//not straight.//__ Examples of non-linear are //__quadradic__// which is when variable is to the //__second power__//, //__cubic__// when it's to the //__third power,__// __exponential__ is when //__x is the variable__//, and //__inverse__// is when //__y is the variable.__// Lines that //__curve__// are //__not linear.__//==== ====On a graph a linear function //__must be straight__//, on a table it has to have a //__constant rate of change__//, or on an equation it is //__y=mx+b or ax+by=c__// unless multiplying by x.====