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# algebradefinitions - variables is called a parabola...

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Introductory Algebra Glossary Chapter Ten

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quadratic equation A quadratic equation is an equation that can be written in the form ax 2 + bx + c = 0, where a, b, and c are real numbers, with a 0.
discriminant The quantity under the radical in the quadratic formula, b 2 - 4ac.

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complex number Any number that can be written in the form a + bi, where a and b are real numbers.
imaginary number A complex number a + bi with b 0.

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real part The real part of a complex number a + bi is a.
imaginary part The imaginary part of the complex number a + bi is b.

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standard form of a complex number The standard form of a complex number is a + bi.
conjugate of a complex number The conjugate of a complex number a + bi is a - bi.

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parabola The graph of a second-degree (quadratic) equation in two

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Unformatted text preview: variables is called a parabola. parabola The graph of a second-degree (quadratic) equation in two variables is called a parabola. axis (axis of symmetry) The axis of a parabola is the vertical or horizontal line through the vertex of the parabola. quadratic function A function defined by an equation of the form f(x) = ax 2 + bx + c, for real numbers a, b, and c, with a 0. Return to Introductory Algebra Created by James Q. Jacobs Superstition Mountain Campus Central Arizona College This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching....
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