Question

Which system of linear equations can be solved using equation [x y] = [1/4 3/4 1 2] [28 -12]

Answer 1

-8x+3y=28

4x-y=-12

Step-by-step explanation:

Let's find x and y from matrices and then check for this systems.

$\left \[[ {{\frac{1}{4} *28-\frac{3}{4}-12 } \atop {1*28-2*12}} \right.]$

Simplify, so we got

7-9

28-24

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So x=-2

y=4

So we need to put those values and check system.