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