math
posted by jannette
Solve the following system of linear equations by graphing. (If the system has no solution, enter NONE for each answer. If the system is dependent, enter INFINITELY MANY for each answer.)
7x+2y=0
2x7y=0
x =
y =

MathMate
The determinant of the lefthand side is
7 2 
2 7
=494
=53
which is nonzero. This implies that the system is not dependent.
So apart from the trivial solution of x=0 and y=0, there is no nontrivial solution.
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