15. (2, 1) is the point intersection of two lines.
(A) -y-3 = 0; 3.r - Y-7 = 0 (B)x+y=3 32 + y = 7
(C) 3.x + y = 3: x + y = 7
(D) x+ 3y - 3 = 0,x-y-7=0
104 Standard
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