Quadratic Functions
저자: Alexandria Renno
1. Vertex of Parabola- the highest/lowest point of a parabola
2. Vertex form - f(x)=a(x-h)² +k where a, h, and k are constants
3. Axis of symmetry - the line through the vertex of a parabola that divides it into 2 congruent halves
4. Minimum value - the y-value of the vertex when the parabola opens upward
5. Zero of a function - the value of the input x that makes the output f(x)=0
6. Binomial - quadratic functions with 2 terms terms, 3x+5
7. Trinomial - quadratic functions with 3 terms, 5x² − 2x − 15
8. Imaginary number - the square root of a negative number written in the for bi, where b is a real number and i in an imaginary unit, √-1
9. Quadratic Function - a function that can be written in the form f(x)=a(x-h)² +k(a≠0), variable is always squared
10. Parabola- U-shaped curve on a graph
11. Standard form - f(x)=ax²+bx+c where a≠0
12. Maximum value - the y-value of the vertex when the parabola opens downward
13. Root of an equation - the values of the variable that make the equation true
14. Imaginary unit - the unit in the imaginary number system √-1
15. Completing the square - process used to form a perfect-square trinomial