Which one of the basic functions (linear, quadratic, rational, or exponential)

[Malissa H]

is related to the arithmetic se Which one of the basic functions (linear, quadratic, rational, or exponential) is related to the arithmetic series?

[davidosterberg1]

linear.An arithmetic series is formed by adding a constant to each successive number. This forms a linear equation if graphed.

[Roman Soldier]

Nevermind I am wrong, it is linear. Exponential functions are when the X is in the exponent.Graph a simple one like 1/2 X * (X+1) which is the sum of all numbers from 1 to X and it is a parabola.Another way to write the equation is(X^2 + X) / 2It is linear because the exponenet is 2 and not X.

[santmann2002]

The linear func. becaus e a_n = a+(n-1)r being a the firts term and a the addong constant