Unit 3 Part 2 Math Vocab
Quadratic Formula
−𝑏±√𝑏2−4𝑎𝑐/2𝑎 where 𝑎, 𝑏, 𝑐 come from 𝑎𝑥2 + 𝑏𝑥 + 𝑐 = 0 ; helps us solve any quadratic equation, especially when we cannot easily factor
Greatest Common Factor (GCF)
the largest factor that a grouping of numbers share
Radicand
the number/expression inside the radical symbol
Radical
the √ symbol when taking a root of number
In AA 2.1, why did we only consider the positive x-intercept?
Cannot have negative time or height
What is the connection between baseball and quadratic functions?
trajectory path of a batter hitting a baseball is a parabola
Index/Degree
tells us what root we are asked to find
Why are all models wrong, but some are useful?
We cannot include every factor of an event in a model incompatible. However, the model can give us information
When we set our function equal to zero, factor, and solve for x, what are we finding?
X-intercepts
Prime Factorization
a process of writing all numbers as a product of primes
Prime Number
a whole number greater than 1 whose only factors are 1 and itself
Factor
a whole number that can be divided evenly into another number.
Discriminant
𝑏2 − 4𝑎𝑐 ; tells us the solutions there are to a given quadratic • 𝑏2 − 4𝑎𝑐 > 0 -- 2 real roots • 𝑏2 − 4𝑎𝑐 = 0 -- 1 real roots • 𝑏2 − 4𝑎𝑐 < 0 -- 0 real roots