Which of the following systems is dependent?

x − y = 2 and x + y = −2
x − y = 2 and −2x + 2y = −4
x − y = 2 and 3x − 3y = 2
x − y = 2 and −x − y = −2

x − y = 2 and −2x + 2y = −4  

                &

x − y = 2 and −x − y = −2

Step-by-step explanation:

A dependent system is a system that has infinite many solutions. These systems graph the same line and simplify to the same equation.

x − y = 2 and x + y = −2                     NO

x − y = 2 and −2x + 2y = −4               YES, divide by -2 for each term and its the  

                                                          same

x − y = 2 and 3x − 3y = 2                   NO

x − y = 2 and −x − y = −2                 YES, divide by -1 for each term and its the  

                                                         same

i don't know

step-by-step explanation: