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# Chapter 5 Math Vocab

### Math Vocabulary

TermDefinition
Complex Fraction is a fraction that has at least one fraction in the numerator, denominator, or both.
Constant Of Proportionally is the number k in the direct variation equation. The constant of proportionally in the equation y=2x is 2
Coordinate plane a coordinate plane is formed by the intersection of a horizontal number line and a vertical number line.
Cross products in a production a/b = c/d the products a times b and b times c are called cross products
Cross Products Property the cross products that are proportional are equal.
Direct Variation two quantities x and y show direct variation when y = kx, where k is a number and k is not is not equal to 0
Ordered pair a pair of numbers (x,y) used to locate a point in a coordinate plane; The first number is the x-coordinate, and the second number is the y-coordinate
Origin the point, represented by the ordered pair (0,0), where the horizontal and vertical numbers lines intersect in a coordinate plane
Proportion an equation stating that two or more ratios are equivalent
Proportional two quantities that form a proportion are proportional
Quadrants the four regions created by the intersection of the horizontal and the vertical lines in a coordinate plane
Rate a ratio of two quantities using different units
Ratio a comparison of two quantities using division
Ratio Tables a table used to find and organize equivalent ratios
Slope the slope m of a line is a ratio of the change in y (the rise) to change in x (the run) between any two points it is a measure of the steepness of a line.
Unit Rate a rate with a denominator of 1.
X axis the horizontal line in a coordinate plane
Y axis the first coordinate in an ordered pair, which indicates how many how many units to move to the left or right from the origin
Y coordinate the second coordinate in an ordered pair, which indicates how many units to move up or down from the origin.
Created by: S730154