Which is the correct answer?

enter image source here

1 Answer
Jun 22, 2018

f's rate is (f(4)-f(2))/(4-2) = 1/2(-5/2(3^4) - -5/2(3^2) ) = -90 which isn't -6.

g's rate is (g(4)-g(2))/(4-2) = 1/2(-77 - -5) =-36 which isn't -6 either.

h goes from (2,0) to (4,-12) so (h(4)-h(2))/(4-2)= 1/2(-12-0) = -6.

Answer: h