x - y = 4
2x = 2y + 8
The system of equations above has how many solutions? Choose the correct choice from the following answers:
A) None B) Exactly one C) Exactly two D) Exactly three E) Infinitely many
x-y=4 ---------------1   2x=2y+8 ---------------2   Divide equation 2 by 2:   2x/2=(2y+8)/2   x=y+4   x-y=3----------------3   Infinitely manyquation 1 and 3 are equal and thus have infinitely many solutions:   x-y=4   x=8, y=4   x=6, y=2   x=7, y=3   Ans:Infinitely many
<result>E</result>
x - y = 4
2x = 2y + 8
The system of equations above has how many solutions?