Identify the solution(s) of the system of equations, if any.
5x + 2y = 2
4x - 2y = 8
A) (9/10, -5/4 )
B) (–6, 16)
C) (10/9, -16/9 )
D) (10, –24)
5 answers
What is your answer
You're right.
thank you!
Actually it is C not B
5x + 2y =2
4x -2y = 8
9x = 10
9x/9 = 10/9
x = 10/9
4x -2y = 8
4(10/9) -2y = 8
40/9 -2y = 8
-2y = 8-40/9
-2y = (72-40)/9
-2y = 32/9
y = (32/9)*(-1/2)
y = -16/9
(10/9, -16/9)
C
You're right
4x -2y = 8
9x = 10
9x/9 = 10/9
x = 10/9
4x -2y = 8
4(10/9) -2y = 8
40/9 -2y = 8
-2y = 8-40/9
-2y = (72-40)/9
-2y = 32/9
y = (32/9)*(-1/2)
y = -16/9
(10/9, -16/9)
C
You're right