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Chapter 8 Math Vocab
Graphing Quadratic Functions
Term | Definition |
---|---|
Quadratic Function | a nonlinear function that can be written in the standard form y=ax^2+bx+c, where a is not equal to 0 |
Parabola | the u-shaped graph of a quadratic fuction |
Vertex | the lowest or highest point on a parabola |
Axis of Symmetry | the vertical line that divides a parabola into two symmetric parts |
Focus | a fixed point on the interior of a parabola that lines on the axis of symmetry; a parabola "wraps" around the focus |
Zero | an x-value for which f(x) =0; located at the x-intercept of the graph of the function |
Minimum Value | the y-coordinate of the vertex of the graph of y=ax^2+bx+c when a>0 |
Maximum Value | the y-coordinate of the vertex of the graph of y=ax^2+bx+c when a<0 |
Vertex Form | a quadratic function of the form y=a(x-h)^2+k, where a is not equal to 0. the vertex of the parabola is (h,k) |