How many solutions does this system of equations have?

3x - 4y = 12

y = 4x - 3

A. 0

B. 1

C. 2

D. infinite

According to the degrees of freedom rule, the number of equations should be equal to the number of unknowns to be determined using the equations. In this case, we are given with two equations so it is expected to have two variables to be solved. One solution is comprised of an x and y variable. Hence the answer is B