anonymous
  • anonymous
Which of the graphs below represent the graphical solution to the following system of equations? 4x + y = 5 3x – 7y = 27
Mathematics
schrodinger
  • schrodinger
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amistre64
  • amistre64
|dw:1323884953333:dw|
anonymous
  • anonymous
Whats the points ?
anonymous
  • anonymous
And non of my graphs show close to looking like that =/

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amistre64
  • amistre64
itd be better if we could see your graphs since this thing isnt actually a precise rendition :)
anonymous
  • anonymous
|dw:1323885260622:dw|
amistre64
  • amistre64
that one might work :)
anonymous
  • anonymous
I will try and drawl my answer choices
anonymous
  • anonymous
you need the point of intersection?
amistre64
  • amistre64
1 Attachment
anonymous
  • anonymous
I have a answer choice that shows that!!! How'd you get the answer
anonymous
  • anonymous
so you need the intersection, i will calc and show here
amistre64
  • amistre64
you draw the line and see where they cross ....
anonymous
  • anonymous
How do you know what line to drawl?
amistre64
  • amistre64
the x and y values are from the equations that are given
anonymous
  • anonymous
? Explain? Im looking at the numbers and not getting how you draw them
amistre64
  • amistre64
4x + y = 5 when x=0. y=? (0,y) 4(0) + y = 5 0 + y = 5 y = 5 (0,5) when y = 0 x = ? (x,0) 4x + y = 5 4x + 0 = 5 4x = 5 x = 5/4 (5/4 , 0) plot the points, and since they are lines ... conect the dots
amistre64
  • amistre64
then work the other line in the same way
anonymous
  • anonymous
Ohhhhhhh.
amistre64
  • amistre64
any 2 points will work, just have to find them. x=0 the y=0 tends to be the easiest way tho
anonymous
  • anonymous
\[y = -4x +5\]\[3x -7y=27\]\[3x -7(-4x +5)=27\]\[x =2\]\[y =-4(2)+5\]\[y = \]\[P(2, -3)\]

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