[masraum]

Originally Posted by k9handler

Onto another area in the section, linear or non-linear?

example:

For each of the relationships below, explain whether you think it is best described by a linear function or a non-linear function. Explain your reasoning thoroughly

a. How fast it takes you to get to work as a function of how fast you drive

b. Probability of getting into a car accident as a function of how fast you drive

c. Your height as a function of age (from age 0 to 100)

I say (a) is best solved by a non-linear, too many variables beyond just speed and time.
(b) no idea
(c)...hmmm linear as the line or curve can be solved with a basic function using a x/y axis? SWAG on my part

Wikipedia can be your friend.
http://en.wikipedia.org/wiki/Linear_function

I believe that linear means "straight line" or first order, ie y=2x+5, 2y+3x=10, etc.... You shouldn't see any variables with an exponent of anything but 1, so no y=x^2.

My guess on A is that they are talking about the straight line basic approach, ie 30 miles at 15 mph --> 2 hrs, 30 miles at 30 mph --> 1 hr, etc..., which is linear.

I would say that B is non linear

C is also non linear