2) Solve the system of linear equations using elimination by addition or subtraction.
Sy=x-1
12. – y=0
O (1,2)
0 (-1,2)
O (-1, - 2)
O (1, - 2)

the answer is -1,-2

Step-by-step explanation:you add y to 2x-y and x-1 to 0, getting 2x=x-1. You go on from there, and the answer is x=-1, y=-2. Hope that helped

21

step-by-step explanation:

11279

a: inscribed angles

step-by-step explanation:

i reviewed this question with a peer and teacher, seems to be correct, me later