Determine which two equations represent perpendicular lines.
(a) y = 2/7 x – 2
(b) y = 2x – 2/7
(c) y = -1/2x + 2/7
(d) y = 1/2x –
2007-02-04 16:14:05 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
c and d have slopes that are opposite in direction, yet equal in magnitude, i.e. perpendicular.
2007-02-04 16:17:31 · answer #1 · answered by Scott 2 · 0⤊ 0⤋
B and C (2 x -1/2 = -1; perpendicular lines)
2007-02-05 00:20:40 · answer #2 · answered by lambdamuomega1 2 · 0⤊ 0⤋
b and c are the two that are perpendicular, the slopes of those two lines are opposite reciprocals. (2/1 and -1/2)
2007-02-05 00:19:04 · answer #3 · answered by sarajschryver 2 · 0⤊ 0⤋
That would be (b) and (c). The sloped must be opposite reciprocals. Not just oppsite. 1/2 is the reciprocal of 2, and make that negative to be perpendicular.
2007-02-05 00:27:51 · answer #4 · answered by macho_bob 3 · 0⤊ 0⤋
(b) y = 2x – 2/7
(c) y = -1/2x + 2/7
2007-02-05 00:20:01 · answer #5 · answered by bimands 1 · 0⤊ 0⤋
(b)y=2x-2/7;
(c)y=-1/2x+2/7
m1*m2= -1
2007-02-05 00:24:31 · answer #6 · answered by sachin gupta 1 · 0⤊ 0⤋
(b) and (c) because the product of the two slopes is -1.
2007-02-05 00:21:44 · answer #7 · answered by sahsjing 7 · 0⤊ 0⤋