janiveaaskew
janiveaaskew janiveaaskew
  • 02-10-2019
  • Mathematics
contestada

Solve the system by using a matrix equation.

4x-3y=6
6x-4y=4​

Solve the system by using a matrix equation4x3y66x4y4 class=

Respuesta :

joseaaronlara
joseaaronlara joseaaronlara
  • 02-10-2019

Answer:

The answer to your question is:

x = -6

y = -10

Step-by-step explanation:

Δ = [tex]\left[\begin{array}{ccc}4&-3\\6&-4\end{array}\right] \\[/tex]

Δ = -16 + 18

Δ = 2

Δx = [tex]\left[\begin{array}{ccc}6&-3\\4&-4\\\end{array}\right][/tex]

Δx = -24 +12

Δx = -12

Δy = [tex]\left[\begin{array}{ccc}4&6\\6&4\\\end{array}\right][/tex]

Δy = 16 - 36

Δy = -20

x = -12/2 = -6

y = -20 / 2 = -10

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