Posted by **zachary** on Friday, November 2, 2012 at 5:07pm.

given the function f(x)= x^3+3x find the rate of chnge between the two values x:1 to 2

find the equation of a secant line containing the given points (1,f(1) and (2,f(2))

- college algebra -
**Reiny**, Friday, November 2, 2012 at 5:30pm
f(1) = 4

f(2) = 14

rate of change = (14-4)/(2-1) = 10

the slope of the secant is 10, (see above)

equation is y = 10x + b

but (1,4) lies on it, so

4 = 10(1) + b

b = -6

secant equation: y = 10x - 6

## Answer this Question

## Related Questions

- college algebra - given the function fx=x^3+x a) find the rate of change between...
- college algebra - Given the function f(x) = x^3+ 3x Find the rate of change ...
- calculus - Given the function f(x) = 3x - 9 a. Find the rate of change between ...
- college algebra--please - I am not understanding this question and I have read ...
- college algebra - given function f(X)=X^3+3x findthe rate of change between the ...
- college algebra - given the functionf(x)=x^3+3x find the rateof change between ...
- math - can someone please help me with this question. Given the funtion f(x)= 3x...
- pre-calculas - can someone please help me with this question? Given the function...
- Math 116 - 1.Write an equation of the line containing the given points and ...
- Math 116 - 1.Write an equation of the line containing the given points and ...