Coordinate Algebra Puzzle

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Across
  1. 5. Any mathematical sentence that contains the symbols > (greater than), < (less than), <
  2. 6. an isometry where all points in the preimage are moved parallel to a given line.
  3. 7. A number multiplied by a variable.
  4. 9. The sum of the lengths of the sides of a polygon.
  5. 13. a measure of the rate of change of one.
  6. 14. The set of x-coordinates of the set of points on a graph; the set of x-coordinates of a given set of ordered pairs. The value that is the input in a function or relation.
  7. 15. is a pattern in the data.
Down
  1. 1. To replace one element of a mathematical equation or expression with another.
  2. 2. A rule of matching elements of two sets of numbers in which an input value from the first set has only one output value in the second set.
  3. 3. A letter or symbol used to represent a number.
  4. 4. Shift Number of units the graph of the function is moved up or down; a translation.
  5. 7. Difference The number added to each consecutive term in a geometric sequence.
  6. 8. A mathematical phrase involving at least one variable and sometimes numbers and operation symbols.
  7. 10. a continuous series of values.
  8. 11. A number sentence that contains an equals symbol.
  9. 12. The Vertical distance between an observed data value and an estimated data value on a line of best fit.