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2. of a number, quantity, or expression expressible, or containing quantities that are expressible, as a ratio of whole numbers.
7. of a number, quantity, or expression not expressible as a ratio of two integers, and having an infinite and nonrecurring expansion when expressed as a decimal.
8. a decimal fraction in which a figure or group of figures is repeated indefinitely
10. not denoting, involving, or arranged in a straight line.
11. a part of a whole
14. one number that when multiplied by itself gives the actual number
15. difference in size, degree, circumstances, etc.; lack of equality.

1. the horizontal plane of a graph in a Cartesian coordinate system
3. a decimal number that ends after a finite number of digits after the decimal point
4. the process of making known one's thoughts or feelings.
5. not consistent or having a fixed pattern; liable to change.
6. the secondary or vertical axis of a system of coordinates, points along which have a value of zero for all other coordinates.
9. arranged in or extending along a straight or nearly straight line.
12. when there is no value for the variable that makes the equation true
13. a statement that the values of two mathematical expressions are equal