Algebra 2 Exam Review

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What is a real root of a function?

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A real root of a function is a value of x for which the function equals zero, meaning the graph of the function intersects the x-axis.

Front

How do you determine the number of real roots of a quadratic function?

Back

You can determine the number of real roots of a quadratic function by calculating the discriminant (b² - 4ac). If the discriminant is positive, there are 2 real roots; if it is zero, there is 1 real root; if negative, there are no real roots.

Front

What is the quadratic formula?

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Front

What does it mean for a quadratic equation to have complex roots?

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Complex roots occur when the discriminant of a quadratic equation is negative, resulting in roots that include imaginary numbers.

Front

What is the formula for compound interest?

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Front

How do you solve a quadratic equation by factoring?

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Front

What is the vertex form of a quadratic function?

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Front

What is the significance of the vertex in a quadratic function?

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The vertex of a quadratic function represents the maximum or minimum point of the graph, depending on the direction of the parabola (opening upwards or downwards).

Front

What is the relationship between the roots and the coefficients of a quadratic equation?

Back

Front

How do you find the axis of symmetry of a quadratic function?

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