Point K is 1/n of the way from J(4, -5) to L(0, -7). a. What are the coordinates of K if n=4?
b. What is a formula for the coordinates of K for any n?

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

good job you smart son of a gun you are smarter that einstein. 7

jeff jeff

step-by-step explanation: