SOLUTION: Can you please which two of these equation represent perpendicular lines: (a) y = 4/7x - 3 (b) y = 3x - 4/7 (c) y = -1/3x + 4/7 (d) y = 1/3x

Click here to see ALL problems on Graphs

Question 121003: Can you please which two of these equation represent perpendicular lines:
(a) y = 4/7x - 3 (b) y = 3x - 4/7 (c) y = -1/3x + 4/7 (d) y = 1/3x - 4/7?
Found 2 solutions by rapaljer, brierhopper:
Answer by rapaljer(4671) (Show Source):
You can put this solution on YOUR website!
Lines that are perpendicular have slopes that are NEGATIVE RECIPROCALS of one another. The slope of a line in slope-intercept form is always the coefficient of x. Therefore the slopes of the given lines are

a) 4/7
b) 3
c) -1/3
d) 1/3

Of these numbers the slopes 3 and -1/3 are negative reciprocals, so the answer is b and c.

R^2

Answer by brierhopper(1) (Show Source):
You can put this solution on YOUR website!
The answer would be (b) y = 3x - 4/7 and (c) y = -1/3x + 4/7

SOLUTION: Can you please which two of these equation represent perpendicular lines: (a) y = 4/7x - 3 (b) y = 3x - 4/7 (c) y = -1/3x + 4/7 (d) y = 1/3x - 4/7?