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3 years ago

Lines a and b are perpendicular. The equation of line a is y=1/3x+3. What is the equation of line b

Mathematics

1 answer:

kykrilka [37]3 years ago

6 0

Perpendicular lines have slopes that are negative reciprocals to each other, that is, if one slope is a/b, the other is -b/a
in this case, the given slope is 1/3, so the other line's slope is -3/1, which is -3
from the graph we see that the y intercept of line b is -4, so the equation of line b is: y=-3x-4

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