Algebra 1 Vocabulary EOC
Function
A relationship where every input value (x) has one and ONLY one output value (y) X does not repeat!
Line
Graph of a linear function
Parabola
Graph of a quadratic function
Zero Slope
Horizontal Line
Domain
Set of all input (x) values you can plug into a function
Range
Set of all output (y) values you can plug into a function
Slope
Steepness of a line
Discrete Graph
The graph composed of isolated (only) points.
Axis of symmetry
The line that divides a parabola into two matching halves
Positive Correlation
The relationship between two sets of data in which both sets of data increase together.
Negative Correlation
The relationship between two sets of data, in which one set of data decreases as the other set of data increases.
x-intercept
The x coordinate of a point where the graph crosses the x-axis.
y-intercept
The y coordinate of a point where the graph crosses the y-axis.
Maximum
The y coordinate of the vertex of a parabola that opens downward (highest value).
Minimum
The y coordinate of the vertex of a parabola that opens upward (lowest value).
No Correlation
There does not appear to be a relationship between two sets of data
Linear Parent Function
y=x
Quadratic Parent Function
y=x^2
Quadratic Function
A function of the form y=ax^2+bx+c. Shape is a parabola (U-shaped curve) that opens up or down.
Continuous graph
A graph that is not broken
Root
A solution of a quadratic equation also called zero and x-intercept.
Solutions
Also called roots, zeros or x-intercepts
Linear equation
An equation whose graph forms a straight line.
Zero
An x-intercept of the graph of a function also called a solution or root.
Solution of system of linear equations
Any ordered pair in a system that makes all the equations true.
Function notation
To write a rule by using the symbol f(x) in place of y
Rate of change
Used to describe the measurement of the steepness of a straight line.
Undefined Slope
Vertical Line
Negative Slope
When a line decreases
Positive Slope
When a line increases