SOLUTION: as written : find a value of p that will result in one solution for this system.find this solution! 3x+y=-2 px-y=-12

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: as written : find a value of p that will result in one solution for this system.find this solution! 3x+y=-2 px-y=-12      Log On


   

Question 181453This question is from textbook Algebra and trigonometry
: as written :
find a value of p that will result in one solution for this system.find this solution!
3x+y=-2
px-y=-12 This question is from textbook Algebra and trigonometry

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
3x+%2B+y+=+-2
px+-+y+=+-12
The equations will have the same solution for x
if y+=+0
3x+%2B+0+=+-2
px+-+0+=+-12
-----------------
3x+=+-2
x+=+-%282%2F3%29
and
px+=+-12
p%2A%28-%282%2F3%29%29+=+-12
p+=+%28-%283%2F2%29%29%2A%28-12%29
p+=+18 answer