Algebra II
posted by anonymous on .
1) when using cramer's rule to solve the system of equations containing 5x  y = 5 and 3x + y = 9 the denominator for the x and y variables looks like which of these determinants ? a) 5 5  b) 5 1
3 9 3 1
c) 5 1
9 1
d) none of these
2) when using cramer's rule to solve the system of equations containing 3x  6y = 9 and 4x + 2y = 6 the numerator for the x variable looks like which of these determinants ?
a) 3 6 b) 9 6 c) 6 2
4 2 6 2 3 4 d) none of these
can someone assist me with this? I'm having trouble

The denominator is composed of a determinant made up of the lefthand side of the equation.
The numerator of the variables is made up a determinant of the lefthand side, but with the corresponding column replaced with the vector of the right hand side.