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Course 2 chapter 1

TermDefinition
complex fraction a fraction where either the numerator or denominator is a fraction and the denominator does not equal 0
constant of proportionality A constant ratio or unit rate of two variable quantities. Also called the constant of variation.
constant of variation The constant ration in a direct variation. It is also called the constant of proportionality.
constant rate of change the rate of change in a linear relationship
coordinate plane A plane in which a horizontal number line and a vertical number line intersect at their zero points. Also called a coordinate grid.
cross product The product of the numerator of one ratio and the denominator of the other ratio. The cross products of any proportion are equal.
dimensional analysis the process of including units of measurement when you compute
direct variation the relationship between two variable quantities that have a constant ratio
equivalent ratios two ratios that have the same value
nonproportional The relationship between two ratios with a rate or ratio that is not constant.
ordered pair A pair of numbers used to locate a point in the coordinate plane. An ordered pair is written in the form (x, y).
origin The point at which the x-axis and the y-axis intersect in a coordinate plane. The origin is at (0,0).
proportional the relationship between two ratios with a constant rate or ratio
quadrants one of the four regions into which the two perpendicular number lines of the coordinate plane separate the plane
rate a ratio that compares two quantities with different kinds of units
rate of change A rate that describes how one quantity changes in relation to another. A rate of change is usually expressed as a unit rate.
slope The rate of change between any two points on a line. It is the ratio of vertical change to the horizontal change. The slope tells how steep the line is.
unit rate a rate that is simplified so that is has a denominator of 1 unit
unit ratio a unit rate where the denominator is one unit
x-axis the horizontal number line in a coordinate plane
x-coordinate the first number of an ordered pair, It corresponds to a number on the x-axis.
y-axis the vertical number line in a coordinate plane
y-coordinate The second number of an ordered pair. It corresponds to a number on the y-axis,
Created by: msjonesbss
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