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

x-y=3

7x-y=-3

question 1 options:

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

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

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

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

When (-1,-4) is substituted into the first equation, the equation is true.

When (-1,-4) is substituted into the second equation, the equation is true.

Step-by-step explanation:

The given system is

x-y=3

7x-y=-3

Make x the subject in the top equation to get:

x=y+3

Put x=y+3 in the bottom equation to get:

7(y+3)-y=-3

Expand

7y+21-y=-3

7y-y=-3-21

6y=-24

y=-4

Put y=-4 into x=y+3 to get

x=-4+3=-1

Hence the point (-1,-4) is a solution to both equation

15

step-by-step explanation:

6, 10

9, -13

12, -21

18, -23

step-by-step explanation:

you just add 6 to the x-coordinate and subtract 10 from the y-coordinate.