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lyudmila [28]
3 years ago
15

Which equation in point slope form represents a line with m=-15 that goes through the point (7,-1)

Mathematics
1 answer:
Eva8 [605]3 years ago
4 0
The answer is:  " y = -15x + 104 " .
_________________________________________
  y = mx + b ;

 m = -15

 y  = -15x + b


When x = 7 ; y = -1 ; 


-1 = -15(7) + b


-1 = -105 + b ;
________________
Solve for "b" 
_________________
  -1 = -105 + b ;  ↔  - 105 + b = -1 ; 

↔  b − 105 = -1  
________________________
Add "105" to each side of the equation:
________________________________
    b − 105 + 105 =  -1 + 105 ;

    b =  104
_______________________________
   y = mx + b ;   →   y = -15x + 104 .
_______________________________
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