Answer:
C
Step-by-step explanation:
To find which of the given choices are solutions for the system of equations, we need to:
-substitute x, and y with the given coordinates and
-check if they are solutions for both equations.
7x+y= 6
x+ 2y = -1
A. (x = -1, y = 0) ❌
7(-1)+0= 6; -7 =6 FALSE
-1+ 2*0 = -1; -1= -1 TRUE
B. (x = 1, y = 0)❌
7*1+ 0= 6; 7= 6 FALSE
1+ 2*0 = -1; 1 =-1 FALSE
C. (x =1, y= -1)✅
7*1 -1= 6; 6=6 TRUE
1+ 2(-1) = -1; -1=-1 TRUE
D. None of these choices are correct ❌
because one choice is correct
