Question

Find the equation of a line that is perpendicular to the line y=(1/3)x+4 and contains the point (-9,0)?

Answer 1

y = -3x - 27

Explanation:

0 = -3[-9] + b

-27 = b

y = -3x - 27

* Perpendicular Lines have OPPOSITE MULTIPLICATIVE INVERSE RATE OF CHANGES [SLOPES]:

⅓ → -3

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