document.write( "Question 637355: In a quadratic equations why does the y value for subsequent x values increase or decrease in a pattern. For example, in the equation x^2 -2x -3, the y value when x is 1(vertex), 2, 3, and 4 is -4(vertex), -3, 0, and 5 respectively. Every time the y value is increasing by 1, then 3, then 5, then 7, then 9, and so on. Please explain this! \n" ); document.write( "

Algebra.Com's Answer #401575 by stanbon(75887) $\"\"$ $\"About$

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In a quadratic equations why does the y value for subsequent x values increase or decrease in a pattern. For example, in the equation x^2 -2x -3, the y value when x is 1(vertex), 2, 3, and 4 is -4(vertex), -3, 0, and 5 respectively. Every time the y value is increasing by 1, then 3, then 5, then 7, then 9, and so on. Please explain this!
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\n" ); document.write( "The axis of symmetry is a vertical line through the vertex at x = 1.
\n" ); document.write( "The curve is symmetric (left to right) on x = 1.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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