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Line  represent the graph of 3x + 4y = -14. Line  passes through the point (-5,7), and is perpendicular to line . If line represents the graph of y=mx +b
, then find m+b.

 Jun 13, 2021
 #1
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3x + 4y = -14.       re-arrange  as      y = -3/4 x - 14/4      slope , m = -3/4      perpindicular slope = - 1/m = 4/3

 

new line becomes

y = 4/3 x + b      sub in the given point to find 'b'

7 = 4/3 (-5) + b       so b = 13 2/3

 

y = 4/3 x  + 13 2/3        you can finish....I hope !    

 Jun 13, 2021
 #2
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Thank you

Guest Jun 13, 2021

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