Quadratic Equation Vocabulary For Algebra 2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Roots | When the quadratic equation crosses the x-axis; also, when x = 0, the x-intercepts, the solutions, or the zeroes of a quadratic function.
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| Complex Conjugate | A complex conjugate is a pair of numbers that have the same real components but opposite imaginary components. Example 1 + 2i is the complex conjugate of 1 - 2i
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| Vertex | The lowest (minimum) or highest (maximum) point on a parabola. Also, the point where the curve changes directions; (h,k)
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| Standard Form | y = ax^2 + bx + c where a, b, and c are parameters.
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| Vertex Form | y = a(x - h)^2 + k where a, h, and k are parameters and the vertex of the parabola is (h, k)
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| Vertical Stretch | When the parent graph of a quadratic is narrowed, or vertically stretched, to get closer to the y-axis.
Occurs when we change the a value in the vertex form or standard form of a quadratic equation, when a > 1.
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| Horizontal Stretch | When the parent graph of a quadratic is widened, or horizontally stretched, to get closer to the x-axis.
Occurs when we change the a value in the vertex form or standard form of a quadratic function, when a < 1.
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| Vertical Shift | When the parent graph of a quadratic is shifted up or down along the y-axis.
Occurs when we change the k value in the vertex form of a quadratic function.
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| Horizontal Shift | When the parent graph of a quadratic equation is shifted right or left along the x-axis.
Occurs when we change the value of h in the vertex from of a quadratic equation. (x-h) moves h units right and (x + h) moves h units left.
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To hide a column, click on the column name.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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