Solve the system 3x - y = 2 and y = x - 1. A. (-2, 2)
B. (1/2, -1/2)
C. (2, -2)
D. (-1/2, 1/2)

The answer is B

Step-by-step explanation:

3x-(x-1)=2

3x-x+1=2

2x=1

x=1/2

y=1/2-1

y=-1/2

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

answer:      

step-by-step explanation: