precalc stuff

It is linear because…

The first differences in the output values are a constant (number) over consecutive equal-length input-value intervals, (this model) is best.

it is quadratic because…

The 2nd differences in the output values are a constant (number) over consecutive equal-length input-value intervals. (this model) is best.

it is exponential because…

successive output values over equal-length input-values intervals are proportional by a factor of (number from math), so (this model) is best. (show the work)

this is logarithmic because….

The input values change proportionally by a factor of (number) as output values increase in equal-length intervals, a (blank model) best fits the data.

n>m

no horizontal or slant

n=m

ratio of coefficients

n<m

y=0