Linear Functions: . Have graphs that are straight lines. The Rate of Change between any two points is constant. Variable terms can only have an exponent of one. Nonlinear Functions: Have graphs that are NOT straight lines. . The Rate of Change between any two points is NOT constant. Variable terms will have exponents that are numbers other than one. Examples: Tell whether the following functions are linear or nonlinear, and justify your answer 1) X y 0 5 This function is a non linear - 2 2 function because (linear or non-linear) 2 3 4 4 not a constant lake of Change 0 6 -4 2) X y 15 This function is a non linear function because ( linear or non-linear ) 9 3 W N N in not a constant rate of change 1 3 ) y = x This function is a function because (linear or non-linear) 4) A = mr- This function is a function because linear or non-linear) This function is a function because 5) 3x - y =-12 (linear or non-linear) function because 6) C =2nr This function is a (linear or non-linear) ab