Which is the correct answer?

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1 Answer
Dean R.
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#

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