For what value of C, the linear equation 2x + cy = 8 has equal value of x and y for its solution?
Given: y = x is a solution to the equation 2x + cy = 8
Put x = y
We have: 2y + cy = 8
Or, cy = 8−2y
c = 
− 2 = 
− 2
9
For what value of C, the linear equation 2x + cy = 8 has equal value of x and y for its solution?
Given: y = x is a solution to the equation 2x + cy = 8
Put x = y
We have: 2y + cy = 8
Or, cy = 8−2y
c = − 2 = − 2