Khan Academy Practice
Properties of Quadratic Equations
The largest exponent is 2. So, a quadratic function will always have a degree of 2.
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The graphs of quadratic equations have some special features.
The coefficient of xsquared tells you whether the graph opens upward or downward. If a is positive, the graph opens upward. It has a minimum or low point. If a is negative, the graph opens downward. It has a maximum or high point. The vertex of a quadric equation is the minimum or maximum point of the equation. The graphs below will help you understand these properties of quadratic equations. |
PROPERTIES OF QUADRATIC EQUATIONS
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Zeros and the Quadratic Formula
The zeros of a quadratic function are the values of x where the graph crosses or touches the x-axis. A quadratic function can have two zeros, one zero, or no zeros.
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