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14 votes
14 votes
Determine whether the lines x+ 7y= −3 and y = 7x + 25 are parallel, perpendicular, or neither. Justify your answer by showing all the needed work.

User Mathieu Ferre
by
2.2k points

1 Answer

29 votes
29 votes

Answer:

perpendicular

Explanation:

Rewrite the equations

y = (-1/7)x - 3/7 -- L1

y = 7x + 25 -- L2

Slope of L1 x Slope of L2 = -1/7 x 7 = -1

As a result, the two lines are perpendicular

User Jakub Krawczyk
by
2.9k points
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