Question

What is the value of D, for solving simultaneous

equations x+y=3, 3x-2y-4=0 by determinant method.​

Answer 1

Answer:

The value of this determinant is found by finding the difference between the diagonally down product and the diagonally up product

now here, the equation is.

x + y = 3

3x - 2y = 4

The denominator determinant, D, is formed by taking the coefficients of x and y from the equations written in standard form.

D =  

according to formula,

D = ( 1 ) × ( -2 ) - ( 1 ) × ( 3 )

D = - 2 - 3

D = -5

HENCE, option (C) is correct.

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Step-by-step explanation: