245,410 views
41 votes
41 votes
Tell whether the lines for each pair of equations are parallel, perpendicular, or neither.

y=-x-
12
-6x - 12y = 21

User Sridhar Sg
by
2.8k points

2 Answers

14 votes
14 votes

Answer:

None.

Explanation:

To be parallel, slope must be equal

To be perpendicular, product of slope must be -1

For Slope of y=-x- 12

x+y=-12

Slope= - coefficient of x/coefficient of y = -1/1=-1

For Slope of -6x - 12y = 21

Slope= - coefficient of x/coefficient of y = -(-6)/-12=-1/2

They are neither same (-1,1/2) nor is their product -1(-1*-1/2=1/2)

Thus, they are neither parallel nor perpendicular.

User Alokoko
by
3.0k points
10 votes
10 votes

Answer:

neither......................

User Larz
by
3.0k points
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