Determine which two equations represent perpendicular lines. Explain your choice.(a) y = 5/3 x – 3 (b) y = 3x –5/3 (c) y = -1/3x +5/3 (d) y =1/3x –5/3
2007-02-18 17:29:48 · 5 answers · asked by nazerbean1 1 in Science & Mathematics ➔ Mathematics
b and c because the product of their slope is -1..
that is slope of eq b =3
slope of eq c = -1/3
3 x -1/3 = -1 //answer
2007-02-18 17:39:30 · answer #1 · answered by 13angus13 3 · 0⤊ 0⤋
Answers B and C; the slopes of perpendicular lines are opposite reciprocals (flipped upside-down and multiplied by -1). The slope of line B is 3, and the slope of line C is -1/3, its opposite reciprocal. Pay a little more attention in math next time : )
2007-02-19 01:37:42 · answer #2 · answered by Psionic Penguin 1 · 0⤊ 0⤋
comparing y=mx+c to three equations,we get
a)m-1=5/3
b)m-2=3
c)m-3=-1/3
d)m-4=1/3
Here m-2*m-3=-1,hence 'b' and 'c'are perpendicular lines.
2007-02-19 01:40:08 · answer #3 · answered by chapani himanshu v 2 · 0⤊ 0⤋
B and C
Because perpendicular lines have negative reciprocal slope and y intercept,
Dude down there, its B AND C
definition of a perpendicular line, they have negative reciprocals.
2007-02-19 01:33:59 · answer #4 · answered by PROUD TO BE A LIBERAL TEEN! 4 · 0⤊ 0⤋
c and d because their slopes and y intercepts are inverse (opposite) of each other. this means they will meet and form a 90 degree angle
2007-02-19 01:35:45 · answer #5 · answered by bp236 2 · 0⤊ 0⤋