The given system of equations ( x + 2y = k , 2x + 4y = -8) has no solutions. Then k can take all real values except.
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Answer:
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Answer:
-4
Step-by-step explanation:
Thinking of these as lines, then to have no solutions they have to be parallel lines.
Let the lines be: ax+by=c, px+qy=r
Example of:
1. parallel lines
then a/p = b/q but not equal to c/r
2. coincident lines, meaning same lines
then a/p = b/q = c/r
3. intersecting lines
then a/p is not equal to b/q
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