Posted by **ladybug** on Tuesday, September 18, 2012 at 10:33pm.

can someone please help me with this question?

Given the function f(x)=3x-9

Find the rate of the change between the stated values for x: 7 to 8

A. Find the equation of a secant line containg the given point (7,f,(7)) and (8,f,8))

B. Find the rate of change between the stated values for x: 7 to 8

- pre-calculas -
**bobpursley**, Tuesday, September 18, 2012 at 10:38pm
z. f(x)=3x-9

b. rate of change is 3

explaination: find the two points (at x=7, and x=8).

then find the slope (f(8)-f(7)/(1))

then the equation is of the form y=slope*x+b. Put either point in, and solve fodr b.

## Answer this Question

## Related Questions

- math - can someone please help me with this question. Given the funtion f(x)= 3x...
- college algebra--please - I am not understanding this question and I have read ...
- calculus - Given the function f(x) = 3x - 9 a. Find the rate of change between ...
- 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 ...
- 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 ...
- college algebra - given the function f(x)= x^3+3x find the rate of chnge between...
- calculus - i'm not sure how to do this. can someone help, please? thanks! ...
- Calculus Please Help - Given the numerical values shown for the function f(x), ...