Quadratics

Vocabulary

Parabola

A symmetrical open curve formed by the intersection of a cone with a plane parallel to its side.

Quadratic

Involving the second and no higher power of an unknown quantity or variable

Vertex

A turning point in the parabola

Axis of symmetry

A line through a shape so that each side is a mirror image

Maximum Value

The maximum value of a quadratic function f(x) = ax2 + bx + c where a< 0,="" is="" the="">y- coordinate of the vertex

Minimum Value

The minimum value of a quadratic function f(x) = ax2 + bx + c where a > 0, is the y- coordinate of the vertex

Terms

Numbers or variables separated by a +, -, or = sign

5x + 35 = 80

First differences

Difference between the numbers

Square numbers - 4, 6, 9, 13, 18, 24

First difference - 2, 4, 6

Second differences

Difference between the first differences.

First difference - 4, 8, 12

Second difference - 4, 4, 4

Zero's (roots)

is a root or zero of a polynomial if it is a solution to the equation . Anything on the 0 on the y- axis