Allieeslabae
  • Allieeslabae
12. What is the equation of the line perpendicular to the line y = x – 2 that passes through the point (4,3)? y = –4/9 x – 2 y = 9/4 x + 6 y = – 9/4 x + 12 y = – 9/4 x – 12
Algebra
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
Hi
Allieeslabae
  • Allieeslabae
Hey do you know how to solve?
anonymous
  • anonymous
add me as a fan so I can pm you then I will help you

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anonymous
  • anonymous
To find the the perpendicular line of y = x – 2, first we should start with the slope. The slope of the first equation is x. The slope of an equation perpendicular to the original will have the opposite reciprocal of the original slope. So we take the reciprical of x which is 1/x. The opposite (or negative) of 1/x would be -1/x. Make sense so far?
Allieeslabae
  • Allieeslabae
Okay so slope is x1 x1/ y1 y2 right?
anonymous
  • anonymous
Could you explain where you got that answer from?
Allieeslabae
  • Allieeslabae
Thats how you find the slope right? Sorry I meant (x1, y1) and (x 2, y 2)
anonymous
  • anonymous
That is how you would find the slope when given to pairs of coordinates. For example, if you were given the coordinates (3,4) and (1,2) \[\frac{ y2-y1 }{ x2-x1 } \rightarrow \frac{ 4-2 }{ 3-1 } \rightarrow \frac{ 2 }{ 2 } =1\] But to find the slope perpendicular to the original slope, you don't have to use the formula.
Allieeslabae
  • Allieeslabae
Okay im confused wht do i use then?
anonymous
  • anonymous
It's just what I said earlier "the opposite reciprocal". That's it. :)
Allieeslabae
  • Allieeslabae
Okay thanks you. Ill try that!
anonymous
  • anonymous
So you know how I got -1/x right?
Allieeslabae
  • Allieeslabae
nope, but I have to go to my tutor, Ill catch her up on what you told me! Thanks though!
anonymous
  • anonymous
You're welcome. And good luck. :)

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