What are the coordinates of the point of intersection of the lines
x + 3y = 7 and 2x + y = -1?
(A) (2, -3) (B) (-2, 3) (C) (2, 3) (D) (-2, -3)
Answers
Answered by
2
the answer is b (-2;3) hope u loved it
Answered by
8
Answer:
2,-3
Explanation:
(x+3y=7)2
2x+ y=-1
---------------
2x+6y =14
2x+ y =-1
(-) (-) (+)
-------------------
+5y =15
y=3
2x+18=14
2x=-4
x=-2
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