SOLUTION: Solve the system below using graphing. Write down the solution as an ordered pair. x+2y= -4 x-y=5 Solution( , ) The perimeter of a rectangular field is 460 yards. If th

Algebra ->  Graphs -> SOLUTION: Solve the system below using graphing. Write down the solution as an ordered pair. x+2y= -4 x-y=5 Solution( , ) The perimeter of a rectangular field is 460 yards. If th      Log On


   

Question 89993: Solve the system below using graphing. Write down the solution as an ordered pair.
x+2y= -4
x-y=5
Solution( , )

The perimeter of a rectangular field is 460 yards. If the length is 30 yards more than the width, find the dimensions of the field.
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
X+2Y=-4 OR 2Y=-X-4 OR Y=-X/2-4/2 OR Y=-X/2-2 (RED LINE)
X-Y=5
-Y=-X+5 OR Y=X-5 (GREEN LINE)
+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+y+=+-x%2F2+-2%2C+y+=+x+-5%29+ (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions y = -x/2 -2 and y = x -5).
ANSWER (2,-3).
------------------------------------------------------------------------
L=W+30 THEN THE PERIMETERIS:
2(W+30)+2W=460
2W+60+2W=560
4W=560-60
4W=500
W=500/4
W=125 YDS.
L=125=30
L=155 YDS.
PROOF
2*125+2*155=560
250+310=560
560=560