
Glossary
Key Terms:
axis of symmetry  dashed vertical line that contains the vertex
completing the square  add a third term to a binomial to form a perfect square trinomial
conjugates  radical expressions that differ only in the sign of one term
discriminant  the portion under the radical sign
irrational number  number that cannot be expressed as (a / b) where b is not equal to zero
minimum/maximum point/value  point with the least/greatest value of the function
perfect square  positive rational number whose principal square root is a rational number
porabola  any equation in the form y = ax^{2} + bx + c has a graph that is a porabola
principal square root  the positive square root of a positive real number
quadratic function  an equation in the form y = ax^{2} + bx + c where a is not equal to zero
radicand  number under the radical sign
rational number  a real number that can be expressed in the form (a / b) where b is not equal to zero
rationalize the denominator  multiply the numerator and the denominator by the least square root needed to make the radicand in the denominator a perfect square
real number  aany number that is positive negative or zero
right triangle  triangle with one angle with a degree measure of 90
subset  if all members of a set X are also members of set Y, then X is said to be a subset of Y
vertex  turning point of a porabola
