Math
In which of the following sets of points is y a function of x? A= {(2, 2), (4, 6), (5, 3), (5, 1)} B= {(2, 2), (3, 4), (4, 4), (5, 4)} C= {(1, 4), (2, 3), (4, 4), (4, 1)} D= {(1, 4), (1, 5), (2, 6), (3, 5)}
Algebra
PLease solve by elimination. 2x+4y=8 5x+y=-7
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