For example, let's say i am graphing a proportional relationship even if it doesn't go through origin and it is an equivalent ratios, is it proportional or does it have to go throught the origin to be proportional?

A proportional relationship is described by the equation

... y = k·x

The point (x, y) = (0, 0) is always a solution to this equation.

In short, if the relationship is proportional, its graph will go through the origin. If the graph does not go through the origin, the relationship is not proportional.

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Note that this is true if the domain includes the origin. You can have y = kx for x > 10 and the graph will not go through the origin because the function is not defined there.

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.