How many solutions does this system of equations have? 2x+y=1 4x+2y=2 A.none B.exactly one C.exactly two D.infinitely many
\(2x+y=1 \\4x+2y=2|:2\\\\
2x+y=1\\
2x+y=1\\\)
both equations are identical ⇒ D
Given the equations 2x+y=1 and 4x+2y=2, if we divide the second equation by 2, we are left with 2x+y=1, which is the same equation as the first. This means that the lines over lap, and that there are infinite places where they "intercept"
Final answer:
D. Infinitely many