Coordinate Algebra Crossword Puzzle

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Across
  1. 5. a mathematical sentence that uses an equal sign (=) to show that two quantities are equal
  2. 7. a quantity that does not change
  3. 9. labeled on the y-axis
  4. 12. the number multiplied by a variable in an algebraic expression
  5. 13. letters used to represent values or unknown quantities that can change or vary
  6. 15. a mathematical sentence that shows the relationship between quantities that are not equivalent
Down
  1. 1. an inequality that has one or more variables
  2. 2. a set of two number lines, called the axes, that intersect at right angles
  3. 3. something that can be compared by assigning a numerical value
  4. 4. a restriction or limitation on either the input or output values
  5. 6. rate a rate per one given unit
  6. 8. the factor being multiplied together in an exponential expression
  7. 10. a ratio that compares different kinds of units
  8. 11. terms terms that contain the same variables raised to the same power
  9. 14. a value that makes the equation true