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Maths Puzzle
Co-ordinate geometry
What does it mean when the graph of a quadratic equation does not cross the x-axis?
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Book Other Question
The question was posed to me as:
There is one train traveling North at 50 miles per hour departing at 5:30 p.m. and another train traveling South at 55 miles per hour departing
Solve each by the graphing method.
x+y=5
x-y=-3