Write an equation of the line that passes through each pair of points. (-3,1), (0,3)

Can someone me and do the problem plz so i can understand it more better

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

The formula for the volume of a right square pyramid is given below, where a is the side length of the base and h is the height.