Matching Pairs Proportional Relationships Vocabulary MatchOnline version Match the mathematical vocabulary word with it's meaning. by Michele Mirabal 1 x-coordinate 2 unit rate 3 proportional relationship 4 coordinate point 5 coordinate plane 6 ratio 7 constant of proportionality 8 rate 9 equation 10 y-coordinate The position of a point according to the x-axis. The constant value of the ratio of two proportional quantities x and y, usually written y=kx or k=y/x where k is the factor of proportionality. A comparison of two quantities with different measurement units. A comparison of two values which may be written as a to b, a:b, or as a fraction a/b. A comparison of two measurements in which one of the terms has a value of 1. Two or more ratios or fractions having equal value. A plane containing two axes intersecting at a point called the origin, (0,0). A mathematical statement containing an equals sign, to show that two expressions are equal. An ordered pair of numbers on a coordinate plane. The position of a point according to the y-axis.