Question

Line perpendicular to y = 5x + 15
that goes through (-5, -9)

Answer 1

y= -1/5x - 10

Explanation: the line has the form: y=ax+b

the line goes through (-5,-9) --> -5a+b=-9

the line is perpendicular to y=5x+15 --> 5a=-1 --> a=-1/5

therefore (-5). (-1/5) + b = -9 --> b=10

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