voc 5

Positively correlated

A relationsipbetween two variables in which both variables move in tandem .

Slope - intercept from of the equation of a line

A straight line on the coordinate plane can be described by the equation.

Linear system

An equation that makes a straight line when it is graphed.

Point - plotting method

Find to or more points.

Rectangular coordinate system

A Cartesian coordinate system is a coordinate system that specifies each point uniquely in a plane by a pair of numerical coordinates ,which are the signed distances to the point from two fixed perpendicular lines, measured in the same unit length.

Piecewise function

A function made up of 3 pieces

Scatter plot

A graph of plotted points that show the relationship between two sets of data.

Solution of an inequlities in two Varables

A linear inequality divides the coordinate plane into two halves by a boundary line.

correlation coefficient

A number -1 and +1 calculated so as to represent the liner dependence of two variables or set or data.

Quadrants

Any of the 4 areas made when divide up a plane by an x and y axis .

Point - slope form of the equation of a line

Are the coordinates of a given point on the line compare slope intercept.

Perfect negative correlation

Between two variables in which one variable increases as the other decreases , and vice versa .

Perfect positive correlation

Both variabls move in tandem.

Ordered pair

Can be used to show the position on a graph, where the "x" ( horizontal ) value is first, and the " y" ( vertical ) value is second.

Cost function

Cost associated with a certain action or a certain level of output .

Solution set of a system linear inequalities in two variables.

Divides the coordinate plane into two havlves by a boundary line .

Correlated

Establish a mutual relationship or connection.

Origin

Graph it is where the X axis and Y axis cross .

Y-axis

Graph that runs vertically ( up -down ) through zero.

Rise

How far a line goes up for a given distance along

Run

How far a line goes up for a given distance going up

Slope

How steep a staight line is.

Revenue function

Input has a single output.

X-intercept

Is a line that goes crosses the x axis

Negatively correlated

Is a relationship between two variables such that as the value of one variable increases.

Fuction notation

Is a rule ( or set of rules ) by which each input results in exactiy one outputr.

Linear function

Is a straight graphs line

Regression line

Is a straight line that describes how a response variable .

Vertical line test

Is a visual way to determin if a curve ia a graph of a function or not .a function can only have one outpute.

Y-coordinate

Is also called the " Ordinate" .

Solution to system of linear equations in two variables

Is any system that can be written in the form.

Graph of a function

Is the set of all poonts in the plane.

Graph of an inequality in two variables

Is the set of points that represents all solutions to the inequality.

Linear inequality in two variables

Is the set of points that represents all solutions to the inequality.

X-axis

It is used as a reference line so you can measure from it.

Break - Even point

Its a tool used to demine the point at which the total expense the total revenue

Graph of an equation in two variables

Its graph is a straight line in the cartesian coordinate system .2. any equations such that the sum of two solutions is a solution and a constant.

Function

Its set of inputs, called the domain; a set containing the set of outputs, and possibly additional elements.

Cartesian coordinate system

That specifies each point uniquely in a plane by a pair of numerical coordinates ,which are the signed distances to the point from two fixed perpendicular directed lines ,measured in the same unit of length .

X-coordinate

The horizontal value in a pair of coordinates : how far along the point is .

Rate of change

The rate of change is represented by the slpe of a line

Linear equation in two variables

The same coordinate system.

Plot

To draw on agraph or map .

Equation in two

To solve a system of two linear.

System of linear equation

Two or more equations working together.

Correlation

When the valuse increase together .

Half plane

Which consists all points on one side of an infinite straight line and no the other side.

Y is a function of x

Y varies according to whatever value x takes on .

Y-intercept

where a straight line crosses the y axis of a graph