anonymous
  • anonymous
Three vertices of a parallelogram are (-3,4),(-5,8),(1,-6) what the fourth vertex
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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sasogeek
  • sasogeek
have you done vectors?
anonymous
  • anonymous
nope
anonymous
  • anonymous
You can plot the points in the graph to visualize the problem better. One way to solve this problem is to compute the different slopes of the lines joining two vertices, using the point-slope formula \( slope = \frac{y_2-y_1}{x_2-x_1}\) and then look for the one which does share a slope with other points.

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sasogeek
  • sasogeek
|dw:1326156907260:dw| A(-3,4) B(-5,8) C(1,-6) find D
anonymous
  • anonymous
Ultimately there will be three possible parallelograms you can make.
sasogeek
  • sasogeek
how?
anonymous
  • anonymous
You can flip the triangle formed by the 3 given points in 3 different ways to get three different paralellograms.
sasogeek
  • sasogeek
there's actually only one if 3 points are given... 2 lines will be made from the 3 points, u only need parallel lines to intersect to find the forth point
sasogeek
  • sasogeek
why would u flip it? it points remain where they are i suppose...
sasogeek
  • sasogeek
i was going to use vectors to solve this though but you've got no idea about vectors.... hmmm :/
anonymous
  • anonymous
You can make a paralellogram by drawing the reflection of the triangle across one of its sides.
anonymous
  • anonymous
like in vector addition!
sasogeek
  • sasogeek
reflection? ... i'm not sure why you're talking about reflections, why don't u just go ahead and find the parallel lines with respect to the initial triangle formed...

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