SOLUTION: solve the system algebraically. Find the number of solutions for the system -5x+3y=-15 -10x+6y=-30 A)No solution B)one solution C)infinite number of solutions D)None of th

Algebra ->  Signed-numbers -> SOLUTION: solve the system algebraically. Find the number of solutions for the system -5x+3y=-15 -10x+6y=-30 A)No solution B)one solution C)infinite number of solutions D)None of th      Log On


   

Question 698785: solve the system algebraically.
Find the number of solutions for the system
-5x+3y=-15
-10x+6y=-30
A)No solution
B)one solution
C)infinite number of solutions
D)None of these
Answer by unlockmath(1688) About Me  (Show Source):
You can put this solution on YOUR website!
Hello,
With these:
-5x+3y=-15
-10x+6y=-30
Multiply the first equation by 2 to get:
-10x+6y=-30
Notice this equation is exactly like the second equation:
Therefore, they both lie on each other giving us:
Infinite solutions.
Make sense?
RJ
www.math-unlock.com