What’s the answer help pls

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

Which of the following pairs of functions are inverses of each other? o a. f(x)=x72+8 and 96-9 = 7/x+2) =8 o b. f(x)= 6(x - 2)+3 and g(x) - *#2-3 o c. $4) = 5(2)-3 and 90- 4*: 73 o d. f(x) = 6)-12 and 910 – +12

What is the location of point g, which partitions the directed line segment from d to f into a 5: 4 ratio? –1 0 2 3