anonymous
  • anonymous
The equation of line CD is (y−3) = − 2 (x − 4). What is the slope of a line perpendicular to line CD? A.1 over 2 B. 2 C. negative 1 over 2 D. −2
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
you know what the slope of this line is ?
anonymous
  • anonymous
hint: it is in the "point-slope" form, so you can read the slope directly from the equation
Haseeb96
  • Haseeb96
when you will solve the above equation you will get y-3 =-2x + 8 y = -2x -11.....eq#1 here -2 is your slope now for perpendicular slope will be +1/2 now put 1/2 at the place of -2

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Haseeb96
  • Haseeb96
y= 1/2 x -11 2y = x - 22 x-2y-22=0 is the correct answer
anonymous
  • anonymous
thats not one of the answer choices??????
Haseeb96
  • Haseeb96
A is the correct answer I just take out the equation of perpendicular line
anonymous
  • anonymous
i chose that one last time and it said i was wrong
Haseeb96
  • Haseeb96
|dw:1436380971922:dw|
Haseeb96
  • Haseeb96
A is correct answer I am 100% sure
Haseeb96
  • Haseeb96
how -1/2 - signs will be cancel from each sides
anonymous
  • anonymous
you're correct! option A (1/2)

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