Determine whether each equation represents a proportional relationship. Check all that have a proportional relationship. A. y = 0.5x + 2
B. y = 1,000x
C. y = x + 1
D. y = 17x

It is C

B and D represent a proportioonal relationship.

Step-by-step explanation:

In order for an equation to be proportional, it must be in the form of y = kx.

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.