Mathematical Crossword!

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Across
  1. 2. A set of values of the dependent variable corresponding to all the values of the independent variable in the domain
  2. 3. Numbers with points on the number line
  3. 4. Also known as fractions; numbers between integers
  4. 6. A set of values of the independent variable
  5. 8. Function This kind of function can have one, two, or three X-intercepts
  6. 9. Numbers that can't be expressed, even with a root
  7. 12. A whole number and its opposite
  8. 13. A set of points in a plane, each of which is equidistant from a fixed point called a center
  9. 15. A property that is accepted without proof and is used as a starting point when working with numbers
  10. 16. Numbers that cannot be expressed as a ratio of two integers
  11. 17. The vertical distance between two points divided by the horizontal distance between two points
  12. 18. Numbers that make up other numbers
  13. 19. Numbers that are positive integers; counting numbers
Down
  1. 1. Step Squaring both sides when solving an irrational function is known by this name
  2. 5. Equation An equation that has a variable in the denominator
  3. 7. Lines that have an undefined slope
  4. 10. Numbers that can be expressed exactly as a ratio of two integers
  5. 11. The part of the quadratic equation that is under the radical sign; it can help you determine if a number is a perfect square
  6. 14. Lines that have a slope of zero