Question

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

true or false?

Answer 1

@CGGURUMANJUNATH

Answer 2

true

Answer 3

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)

Answer 4

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

Answer 5

lhs=left hand side
rhs=right hand side

Answer 6

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

Answer 7

@CGGURUMANJUNATH