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Question of the Day
Today's question of the day is from the algebra category. Click on an answer choice and then click on 'submit answer' to see if you got it right!

The general equation for a plane is ax + by + cz = k, where a, b, c, k are constants, and the plane is satisfied by points (x,y,z). If a specific plane contains both points (2, 1, 3) and (2, 1, 5), what is the value of c?

  Answer A   -5
Answer B -3
Answer C -2
Answer D 0
Answer E There is not enough information

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