Solving for X
7x=21
x=3
13^2
169
A rule that assigns to each element X in a set A exactly one element, called f(x), in a set B.
What is a function?
The general equation of a line.
What is
y = mx + b?
The area of a triangle.
What is 1/2 base * height?
42 = 19x + 4
x = 2
4x^3
where
x=2
32
Let
f(x) = 6x + 2
Evaluate
f(1/2)=?
f(1/2)=5
The ____ test. Used to test if a graph is a function or not.
SOHCAHTOA
What is sine opposite over hypotenuse, cosine adjacent over hypotenuse, tangent opposite over adjacent?
(11x)/12=2/3
x=8/11
4x + 3 - 2y
where
x = 2
and
y =3
5
The independent variable.
What is X?
Draw an example of a graph that represents a function.
Answer varies.
The quadratic formula.
What is
x=(-b+-sqrt(b^2-4ac))/2
x^2 + x - 2 = 0
x = -1, 2
-4^2 + 3(70 ÷ 5 * 2)
68
The set of all possible values for f(x).
What is the range?
-3 ≤ x < 7
in interval notation.
What is
[-3,7)
Daily Double
Give an example of an irrational number.
3x^2 + 7x + 4 = 0
x = -1, -4/3
(x^3y^4z^7)^2
x^6y^8z^14
The four ways to represent a function.
What is Verbally, Algebraically, Visually, and Numerically?
The slope point formula.
What is
(y_2-y_1)/(x_2-x_1)
cos^-1(sqrt2/2)=x
x=pi/4,(7pi)/4