Asked by zachary

given the functionf(x)=x^3+3x find the rateof change between the two stated values for x:1 to 2
find the equation of a secant line containig the given points (1,f(1))and (2,f(2))
Answered by Steve
f(1) = 4
f(2) = 14

rate of change = slope = 10

line containing (1,4) with slope 10 is

(y-4) = 10(x-1)
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