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Linear Unit Vocab

QuestionAnswer
linear function Domain does not repeat. Input/output
Relation Domain Repeats
Domain X-values of a function
Range y-Values of a Function
Collinear Points are collinear if they lie on the same line.
coordinate plane The plane determined by a horizontal number line, called the x-axis, and a vertical number line, called the y-axis, intersecting at a point called the origin.
Infinity A limitless quantity.
Intercept The x-intercept of a line or curve is the point where it crosses the x-axis, and the y- intercept of a line or curve is the point where it crosses the y-axis.
Parallel Two lines are parallel if they are in the same plane and never intersect.
Perimeter The sum of the lengths of the sides of a polygon.
Perpendicular Two lines are perpendicular if the angle between them is 90 degrees.
Slope The steepness of a line expressed as a ratio, using any two points on the line. (M)
Variable A letter used to represent a number value in an expression or an equation.
x-axis The horizontal axis in a Cartesian coordinate plane.
x-intercept The value of x at the point where a line or curve crosses the x-axis.
y-axis The vertical axis in a Cartesian coordinate system.
y-intercept The value of y at the point where a curve crosses the y-axis. (b)
Standard Form Ax+By=C
SLOPE INTERCEPT FORM Y = mx+b
RATE OF CHANGE change in dependent variable over independent variable
Slope Formula m=(y2-y1)/(x2-x1)
Vertical Line Slope= undefined
Horizontal Line Slope= zero
Arithmetic Sequence When the difference between each term is constant
A1 First term of the Sequence
n term number of the sequence
Common Difference The amount being added from one term to the next(d)
Distance Formula d=squareroot of (x1-x2)2+(y1-y2)2
Midpoint Formula M=((x1+x2)over2;(y1+y2)over2)
Linear Regression A trend line that shows the relationship between two sets of data(LINE OF BEST FIT)
r Correlation Coefficient
positive correlation r=1
negative correlation r=-1
no correlation r=0
Created by: user-1601214
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