Question 668846: Why is it necessary to choose three points on a graph (when graphing a quadratic equation)?
Answer by lwsshak3(11628)   (Show Source):
You can put this solution on YOUR website! Why is it necessary to choose three points on a graph (when graphing a quadratic equation)?
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Here is one way to look at it:
The general form of a quadratic equation is:
y=Ax^2+Bx+C
notice there are 3 unknowns to solve, A, B and C
thus, you will need 3 points for a system of 3 simultaneous equations
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