Determine which of the points (1,-1), (2,-2), and (-3,1) are on
the graph of the equation y (1 + xy) = 6 .
a. (1,-1)
b. (1,-1), (2,-2)
c. (2,-2)
d. (2,-2), (-3,1)
e. (1,-1), (-3,1)
2007-09-01 20:24:06 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
y (1 + xy) = 6
you can find the answer with choices:
y= -1 =>1-x=-6 => x=7 => a ,b and e is incorrect
y=-2 => 1-2x=-3 => x=2 =>c and d may be correct
y=1 => 1-x=6 => x=-5 => only c is correct
2007-09-01 20:36:51 · answer #1 · answered by soha 2 · 1⤊ 0⤋
The answer is C(2,-2)
2007-09-01 20:32:26 · answer #2 · answered by Kay B 3 · 0⤊ 0⤋
put the co-ordinates into y(1 + xy) gives
0
6
-2
so its c - just (2,-2)
2007-09-01 21:03:39 · answer #3 · answered by Beardo 7 · 0⤊ 0⤋
wtf
2007-09-01 20:52:55 · answer #4 · answered by hmmmmmm 2 · 0⤊ 1⤋