Determine if the following system of equations has no solutions, infinitely many solutions or exactly one solution. \[ \begin{array}{l}-x+2 y=-7 \\ -4 x+8 y=-28\end{array} \] Answer Infinitely Many Solutions No Solutions One Solution
Real Tutor Solution
Answer
Solution
Reviewed and approved by the UpStudy tutoring team
Beyond the Answer
To analyze the system of equations, we'll first simplify the second equation: The second equation \(-4x + 8y = -28\) can be simplified by dividing every term by -4, giving us: \[ x - 2y = 7 \] Now, we can rewrite this in a standard form: \[ x - 2y = 7 \] Now we can compare this with the first equation which is already in standard form: \[ -x + 2y = -7 \] If we multiply the first equation by -1, we get: \[ x - 2y = 7 \] Both equations are essentially the same, meaning they represent the same line. Therefore, the system has infinitely many solutions, as any point on this line will satisfy both equations. For a visual twist, imagine these lines as two dancers spinning on stage, with each one following the other's steps perfectly. Since they never miss a beat, they end up dancing together for all time, illustrating the infinitely many solutions! As a little tip, when faced with such systems, always check if you can simplify the equations first, and remember that identical equations signal a dance of infinite possibilities! Just watch out; if the two equations were parallel but not the same, that would point to two dancers who can’t quite sync up—no solution there!