The ordered pair (1, -5) is a solution for the system x + 2y = -9 and x - y = 6.

true or false?

Question

The ordered pair (1, -5) is a solution for the system x + 2y = -9 and x - y = 6.
 
true or false?

anonymous · Answer

@CGGURUMANJUNATH

cggurumanjunath · Answer

true

anonymous · Answer

Which of the following is a solution for the system y = -3x + 5 and y = 2x + 5?
 	
	
(2, -1)
	
(0, 5)
	
(5, 0)
	
(1, 7)

cggurumanjunath · Answer

substitute each of the 4 values say x=2 y=-1 in y=-3x+5 and y=2x+5
if lhs =rhs then it is a solution

cggurumanjunath · Answer

lhs=left hand side
rhs=right hand side

anonymous · Answer

Using elimination to solve the system 2x + y = 8 and x + y = 4, which of the following could be the first step?
 	
	
x = 4
	
2x + y = x + y
	
3x + 2y = 12
	
2x + (4 - x) = 8
	
2x + y = 8--------> 2x + y = 8
(x + y = 4)(-1)---> -x - y = -4

anonymous · Answer

@CGGURUMANJUNATH