Vocabulary
Quadratics Chapter 9
parabola
If you kick a soccer ball it will arc up into the air and come down again like the shape a parabola makes
quadratic
http://www.mathsisfun.com/algebra/quadratic-equation-real-world.html
^examples
vertex
A quadrilateral has 4 vertexes that are the four corners of the quadrilateral. They make up the shape.
axis of symmetry
If you had a paper heart and it were to be folded in half along the axis of symmetry, then the two halves would be the same, they would match up.
maximum value
If you were a skater and you were at the top of the half pipe, you would be standing at the maximum of the parabola that is the half pipe.
minimum value
If you were a skater and you were skating at the lowest point of the half pipe, you would be standing at the minimum of the parabola that is the half pipe.
term
The number 5 goes and gets into the first slot of the term, then an addition sign joins in. After that, an 8 comes into the slot after the addition sign. An equal sign comes next, then the number 13 which is also the answer.
first differences
second differences
^examples and definition
zeros (roots)
Three guys want to split 18 dollars so how much does each person get. The equation is then 3 x = 18 which is really 3x - 18 = 0 or 3x - 18 = y when y = 0