U4 Quadratics Word Scramble
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| Term | Definition |
| Domain | set of all first coordinates, they are independent variables sometimes referred to as 'input' |
| Range | set of all 2nd coordinates, they are dependent variables sometimes referred to as 'output' |
| Function | a special type of relation where each element of the domain is paired with exactly one element of the range "the 2nd coordinate CAN be repeated and the 1st CANNOT" |
| Function Notation | used to write equations that represent functions where f(x) takes the place of y |
| y-intercept | where the graph crosses the y-axis; (0,c) of a quadratic function |
| Parabola | the shape of the quadratic function graph – opens up when the leading coefficient ‘a’ is positive and opens down with the leading coefficient ‘a’ is negative |
| Axis of Symmetry | an imaginary line through the middle of the parabola where each side match (usually shown on the graph as dashed) |
| Equation for Axis of Symmetry | a vertical line with the equation x= -b/2a |
| Vertex | the point on the parabola where the axis of symmetry intersects the graph of the quadratic equation |
| the x-coordinate of the vertex | h= -b/2a |
| the y-coordinate of the vertex | k = f(-b/2a) |
| Maximum Value | the y-coordinate of the vertex on the parabola when a<0 |
| Minimum Value | the y-coordinate of the vertex on the parabola when a>0 |
| Root | the solutions of a quadratic equation |
| Zero | a method for finding the roots for which f(x) = 0 |
| x-intercepts | coordinate where y is 0 "place on graph where the graph CROSSES (intersects) the x-axis! |
| Zero product property | At least one of the factors must equal zero for the function to equal zero |
| Quadratic formula | a formula used to solve quadratic equations |
| Discriminant | part of the quadratic formula that describes the type of roots for the quadratic function |
| Discriminant = 0 | One Real Root of a quadratic (double root) |
| Discriminant < 0 | No real roots of a quadratic |
| Discriminant > 0 and a Perfect Square | Two real rational roots of a quadratic |
| Discriminant > 0 and NOT a Perfect Square | Two real irrational roots of a quadratic |
| Rational Number | Any number that can be written as a fraction where the denominator is NOT 0 |
| Irrational Number | Any number that can NOT be written as a fraction (non repeating decimal, like pi or square root of 2) |
| Vertex Form of Quadratic Equation | y = a(x – h)^2 + k where (h,k) is the vertex |
| Horizontal Shift | a movement of right/left of ‘h’ spaces |
| Vertical Shift | a movement up/down of ‘k’ spaces |
Created by:
martha.kelley