dfou981 dfou981
  • 20-06-2019
  • Mathematics
contestada

6x + 3y = -6 2x + y = -2 A. x = 0, y = -2 B. infinite solutions C. x = -1, y = 0 D. no solution

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kudzordzifrancis
kudzordzifrancis kudzordzifrancis
  • 20-06-2019

ANSWER

B. infinite solutions

EXPLANATION

We want to solve the equation;

[tex]6x + 3y = - 6...(1)[/tex]

and

[tex]2x + y = - 2...(2)[/tex]

We multiply the second equation by 3 to get:

[tex]6x + 3y = - 6...(3)[/tex]

We now subtract equation (1) and (3).

[tex]6x - 6x + 3y - 3y = - 6 - - 6[/tex]

This implies that

[tex]0 = 0[/tex]

Hence the equation has infinitely many solutions.

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