anonymous
  • anonymous
Write the equation of the line that is perpendicular to the line 3x + y = 7 and passes through the point (6, -1).
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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waheguru
  • waheguru
Do you know how to solve this?
anonymous
  • anonymous
nooo im soo lost
waheguru
  • waheguru
What don't you understand

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More answers

anonymous
  • anonymous
i dont understand how to solve it. its been a long time since i did algebra and i cant remember how to do it
waheguru
  • waheguru
Lets Do this step by step Do you know parallel and perpendicular lines ? And how the slope change in relation to each
waheguru
  • waheguru
When a line is parallel to a line then the slope stays the same |dw:1343935655688:dw| Here as you can see the lines will never meet because the slopes are the same althought the y intercepts can be different, even if the slopes were 2 for the first line and 1.9 for the second they wound not be parallel *When a line is parallel to another line the slope is the same Perpendicular lines intersect at 90 degrees and for that to happend the slope must be the opposite reciprocal so if a line is parallel to 1/2, we find the reciprocal which is 2/1 and change it from a positive to negative so it becomes -2/1 Do you get this much
waheguru
  • waheguru
Sorry I meant to say when a line is perpendicular for the second paragraph
anonymous
  • anonymous
yes
anonymous
  • anonymous
oh okay
waheguru
  • waheguru
3x + y = 7 Here you need to find the equation of the line which is perpendicular to this equation so right of the bat we need to make this in to y=mx+b format right so we can get the slope Do you know how to change it in to y=mx+b format?
waheguru
  • waheguru
Convert 3x + y = 7 in to y=mx+b @drakelovermel
anonymous
  • anonymous
i sorta forgot. please refresh my memory
waheguru
  • waheguru
This is algebra 3x + y = 7 you need to isolate y amd move everythin g on the right side y=-3x+7
waheguru
  • waheguru
Do you understand
anonymous
  • anonymous
yes
waheguru
  • waheguru
Now what is the perpendicular slope to -3x?
anonymous
  • anonymous
was it y=3x+7
waheguru
  • waheguru
No we moved it so it became negative
anonymous
  • anonymous
ohh okay i got you
waheguru
  • waheguru
So...
anonymous
  • anonymous
okay so whats to learn next?
waheguru
  • waheguru
What is the perpendicular slope to -3x.
anonymous
  • anonymous
heyy thanks for the help! you where very helpful but i have to go eat and my mom is calling me soo im soo srry but i got to go. but thanks!!!
waheguru
  • waheguru
Np!
anonymous
  • anonymous
http://www.algebra.com/algebra/homework/Linear-equations/Linear-equations.faq.question.388924.html
anonymous
  • anonymous
thank you soo much!

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