HELP PLEASE , ILL MEDAL

Determine the number of solutions for the system of equations.
2x + 8y = 6

-5x - 20y = -15

A. No Solutions
B. One Solution
C. Exactly 2 solutions
D. Infinite number of solutions

Question

HELP PLEASE , ILL MEDAL

Determine the number of solutions for the system of equations.
2x + 8y = 6

-5x - 20y =  -15

 

	A.	No Solutions
	B.	One Solution
	C.	Exactly 2 solutions
	D.	Infinite number of solutions

anonymous · Answer

@welshfella

anonymous · Answer

@coolman500

welshfella · Answer

Hint :-  multiply the first equation by 5 and the second equation by 2
what do you notice?

welshfella · Answer

-  rather multiply second by -2

welshfella · Answer

2x * 5 -8y*5 = 6*5
10x - 40y = 30

welshfella · Answer

sorry that's 
10x + 40y = 30                       (its +8y not -8y)

welshfella · Answer

now multiply the second equation by -2

welshfella · Answer

can you do that?

welshfella · Answer

-5x*-2 - 20y*-2 = -15*-2

can you continue?

welshfella · Answer

remember - * - = +

welshfella · Answer

r u there?