It's C.
You solve the bottom equation for x, then you plug that into where the x is on the top equation.
3(1-5y)-2y=6
Solve for y, and then for x
Identify the solution(s) of the system of equations, if any.
3x-2y=6
5x=5-25y
A) (28/13, 3/13)
B) (-3/17, 32/17)
C) (32/17, -3/17)
D) (32/9, 7/3)
I think the answer is D but i did my check and still comes out incorrect
5 answers
change 2nd equation by dividing by 5
x = 1 - 5y
sub into the 1st
3(1-5y) - 2y = 6
3 - 15y - 2y = 6
-17y = 3
y = -3/17
Without even going further, the only one that has that y value is C)
I will leave it up to you to check that the x is correct by subbing my answer back into x = 1 - 5y
x = 1 - 5y
sub into the 1st
3(1-5y) - 2y = 6
3 - 15y - 2y = 6
-17y = 3
y = -3/17
Without even going further, the only one that has that y value is C)
I will leave it up to you to check that the x is correct by subbing my answer back into x = 1 - 5y
All you do to check x is to take the y answer and plug it into the top equation and solve for x
Thank you Kimmy!!
You are welcome!
3 answers