CHMY141 Fall 2014 Lesson 1.1 Under: Flash Cards Direct Proportionality two quantities that have a constant ratio; expressed as y=x and y=kx where k is a nonzero constant Inverse Proportionality two quantities that have a constant product; expressed as y=1/x and xy=k where k is a nonzero constant Proportionality Constant the nonzero constant k in the equation that expresses the the relationship between two variables x and y Algebra arithmetic in which letters are used to represent variables Variables quantities that may have different values Equation represents a mathematical relationship among variables Multiple Proportionalities when one quantity is proportional to each of two or more other variables, it is proportional to the product of those variables d=nt, d=knt, k=d/nt Related posts: Chemistry 111 Chemistry 121 Chemistry 131 Chemistry 1B Chemistry 2 Chemistry 6th grade (all year)