Answer:
B. (8,-1)
Step-by-step explanation:
Solving the equations simultaneously;
2x +4y=12
y= 1/4x -3
We can use substitution method;
2x + 4(1/4x-3) = 12
2x + x -12 =12
3x = 24
x =8
but y = 1/4x-3
= 1/4(8) -3
= 2 - 3
= -1
Therefore; x = 8 and y =-1
Hence the answer is B. (8,-1)
Answer:
Choice B is the correct answer.
Step-by-step explanation:
We have given two equations.
2x +4y=12 eq(1)
y= 1/4x -3 eq(2)
We have to find the solution of given equation.
Putting eq(2) in eq(1) , we have
2x+4(1/4x-3) = 12
2x+x-12 = 12
3x = 12+12
3x = 24
x = 8
Putting the value of x in eq(2), we have
y = 1/4(8)-3
y = 2-3
y = -1
Hence ,the solution is (8,-1).
