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Determine if the following system of equations has no solutions, infinitely many solutions or exactly one solution.

{:[-2x+y=-5],[2x-y=5]:}
No Solutions
Infinitely Many Solutions
One Solution

Determine if the following system of equations has no solutions, infinitely many solutions or exactly one solution.\newline2x+yamp;=52xyamp;=5 \begin{aligned} -2 x+y & =-5 \\ 2 x-y & =5 \end{aligned} \newlineNo Solutions\newlineInfinitely Many Solutions\newlineOne Solution

Full solution

Q. Determine if the following system of equations has no solutions, infinitely many solutions or exactly one solution.\newline2x+y=52xy=5 \begin{aligned} -2 x+y & =-5 \\ 2 x-y & =5 \end{aligned} \newlineNo Solutions\newlineInfinitely Many Solutions\newlineOne Solution
  1. Analyze Equations: Analyze the system of equations.\newlineWe have the system:\newline2x+y=5-2x + y = -5\newline2xy=52x - y = 5\newlineWe will first check if the equations are multiples of each other, which would indicate that they are the same line and therefore have infinitely many solutions.
  2. Eliminate y: Add the two equations together to eliminate y.\newline(2x+y)+(2xy)=5+5(-2x + y) + (2x - y) = -5 + 5\newlineThis simplifies to:\newline0=00 = 0\newlineSince the variables cancel out and we are left with a true statement, this indicates that the two equations are indeed the same line.
  3. Conclude Solutions: Conclude the number of solutions. Because the two equations represent the same line, the system has infinitely many solutions.