which system of equations is represented by the matrix below?

Question

the matrix ......

[2 4| 12]

[2 0|  4]

 

A. 2x-4y=12

    y= 4

 

B. 2x+4y=12

    2y=4

 

C. 2x+4y=12

    2x=4

 

D. 2x-4y=12

     2y=4

Answer 1

    x        y      number

[   2       4          12   ]

[   2       0           4    ]

 

means 2x+4y=12 and 2x +0y=4