Which statements are true about the ordered pair (−1,−4) and the system of equations?

x - y = 3
7x - y = -3

select each correct answer.

when (−1,−4) is substituted into the first equation, the equation is false.

the ordered pair (−1,−4) is not a solution to the system of linear equations.

when (−1,−4) is substituted into the second equation, the equation is false.

when (−1,−4) is substituted into the second equation, the equation is true.

the ordered pair (−1,−4) is a solution to the system of linear equations.

when (−1,−4)(−1,−4) is substituted into the first equation, the equation is true.

the answer is b.

step-by-step explanation:

identity property is where 0+whatever number=whatever number. basically 0+ a number.

{x = -1/2 ,   y = -1

step-by-step explanation:

solve the following system:

{2 x + y = -2

{10 x - 3 y = -2

in the first equation, look to solve for y:

{2 x + y = -2

{10 x - 3 y = -2

subtract 2 x from both sides:

{y = -2 x - 2

{10 x - 3 y = -2

substitute y = -2 x - 2 into the second equation:

{y = -2 x - 2

{10 x - 3 (-2 x - 2) = -2

10 x - 3 (-2 x - 2) = (6 x + 6) + 10 x = 16 x + 6:

{y = -2 x - 2

{16 x + 6 = -2

in the second equation, look to solve for x:

{y = -2 x - 2

{16 x + 6 = -2

subtract 6 from both sides:

{y = -2 x - 2

{16 x = -8

divide both sides by 16:

{y = -2 x - 2

{x = -1/2

substitute x = -1/2 into the first equation:

{y = -1

{x = -1/2

collect results in alphabetical order:

answer:   {x = -1/2 ,   y = -1