SOLUTION: Please solve we are working with graphing and equations: The question to solve please: 1.5X - 2Y=0 3X - 4Y=7 I am assuming the teacher is asking for the value of x and y.

Algebra ->  Equations -> SOLUTION: Please solve we are working with graphing and equations: The question to solve please: 1.5X - 2Y=0 3X - 4Y=7 I am assuming the teacher is asking for the value of x and y.      Log On


   

Question 90561: Please solve we are working with graphing and equations:
The question to solve please:
1.5X - 2Y=0
3X - 4Y=7
I am assuming the teacher is asking for the value of x and y. Does this make sense?
Please help.
Thank you....;)
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
IT DOES MAKE SENSE. THE SOLUTION IS FOUND BY DRAWING THE 2 LINES AND FINDING THE INTERSECTION.
1.5X-2Y=0 OR -2Y=-1.5X OR Y=-1.5X/-2 OR Y=.75X (RED LINE)
3X-4Y=7 OR -4Y=-3X+7 OR Y=3X-7 (GREEN LINE)
+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+y+=+.75x%2C+y+=+3x+-7%29+ (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, of TWO functions y = .75x and y = 3x -7).
sometimes it's difficult to calculate the exact values from the graphing so:
knowing y=.75x we replace y with .75x in the other equation & solve for x:
.75x=3x-7
3x-.75x=7
2.25x=7
x=7/2.25
x=3 1/9 answer
y=3(3 1/9)-7
y=9 3/9-7
y=2 1/3 answer.