Which description is represented by a discrete graph

Hey there,

 continuous function allows the x-values to be ANY points in the interval, including fractions, decimals, and irrational values. Adiscrete function allows the x-values to be only certain points in the interval, usually only integers or whole numbers.: Graph the continuous function: y = x2 for all Reals.

Ithink ghe answer to this question is b just trying to others