What other equation seven more than the quotient of a number -2 is 6

Which equation represents the function on the graph?

For which pairs of functions is (f•g)(x)=12x? f(x)=3-4x and g(x)=16x-3 f(x)=6x2 and g(x)= 2/x f(x)= and g(x) = 144x f(x)=4x and g(x) =3x

D. in a discrete probability distribution, the sum of the probabilities for the discrete variables will be > 1. true or false