Expressions, Equations & Inequalities
The number in front of a variable
Coefficient
A relation where every input (x-value) has exactly one output (y-value).
Function
The U-shaped graph of a quadratic function.
An equation in the form Ax + By = C
Standard Form
The average of a data set.
Mean
Numbers, variables, or the product of both, separated by addition or subtraction.
Term
The set of all possible input values (usually x).
The set of all possible output values (usually y).
Domain
Range
A polynomial with three terms (e.g., (ax^2 + bx + c).
Trinomial
A set of two or more equations with the same variables.
System of Equations
The exact middle number of a sorted data set.
Median
A fixed number that does not change.
Constant
The point where a line crosses the y-axis, where x = 0.
Y-intercept
The maximum (highest) or minimum (lowest) turning point of a parabola.
Vertex
In the following order state the correct term for:
1. Solving a system by replacing one variable with an equivalent expression.
2. Solving a system by adding or subtracting equations to cancel out a variable.
1. Substitution Method
2. Elimination Method
The organization of the frequency of data represented by individual dots.
Dot Plot
A mathematical phrase that contains numbers, variables, and operation symbols.
Algebraic Expression
Three other names for x-intercepts
Roots, Zeros and solutions
Using the formula: x = -b/2a, name and find the imaginary vertical line that divides a parabola into two symmetrical halves.
3x2 - 6x + 14 = 0
Axis of Symmetry
x = 1
Occurs when lines are parallel and never intersect.
No solution
The range of the middle half of data; calculated as Q3 - Q1 is called _____________.
Calculate it for the following data:
Min: 15 Q1: 23 Median: 37 Q3: 44 Max: 60
Interquartile Range (IQR)
21
Simplify: x + 10 - 6(x - 3x) + 4
13x + 14
Put the following in Slope-Intercept Form:
4x - 3y = 15
y = 4/3x - 5
Factor the following quadratic:
f(x) = x2 + 12x + 35
f(x) = (x + 7)(x + 5)
What do we call the solution for system of equations?
find it for the following equations:
4x + 5y = 20
2x - 5y = 4
Point of intersection
(4, 4/5)
A number from -1 to 1 that measures how well a line fits the data (e.g., r = 1 is a strong positive correlation).
Correlation Coefficient (r)