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To solve this problem, we'll follow these steps:
Now, let's work through each step:
Step 1: Starting with the first equation , we solve for by isolating it:
Subtract from both sides:
Multiply both sides by 2 to solve for :
Step 2: Substitute into the second equation :
Simplify:
Step 3: The equation is always true, indicating there is no contradiction and hence infinitely many solutions when both conditions arise from manipulating consistent equations.
Step 4: Since manipulating these equations leads us to an identity, they are dependent; both equations are forms of the same linear equation . Each point on this line satisfies both equations, confirming infinite solutions.
Therefore, the solution to the system of equations is infinite solutions.
Infinite solutions
\( \begin{cases} x+y=8 \\ x-y=6 \end{cases} \)
When you get a true statement like 6 = 6, it means both equations represent the same line! Every point on that line satisfies both equations, so there are infinite solutions.
Great question! When you get something impossible like 0 = 5, the lines are parallel with no solutions. But 6 = 6 is always true, meaning the lines are identical with infinite solutions.
Yes! You can express the solution as parametric equations. From , you can write: x = 6 - 2t, y = t, where t is any real number.
Pick any value for y, then calculate x using . Check that this (x,y) pair satisfies both original equations. Try multiple values to confirm!
Multiplying by 2 gives - exactly the second equation! This proves they're the same line written differently.
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