X-Axis- the horizontal line on the coordinate plane Y-Axis- the vertical line on a coordinate plane X-Coordiante- the first number in an ordered pair Y-Coordiante- the second number in am ordered pair Ordered Pair- used to locate a point on the coordinate plane Unit Price- the cost per unit Ratio- a comparison of two quantities by division Graph- to place a dot at the point named by an ordered pair Rate- a ratio comparing two quantities with differnt kinds of units Scaling- multiply of divide two quantities by the same number Unit Rate- a rate simplified so that it has a denominator of 1 Ratio Table- columns filled with pairs of numbers that have the same ratio Origin- spot on the graph with the ordered pair of (0,0)