algebra

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Across
  1. 2. explains why x=3 means 3=x.
  2. 3. expression is a mathematical phrase that can contain ordinary numbers, variable.
  3. 5. any number greater than zero
  4. 6. coefficient is defined as a fixed number that is multiplied to a variable. So in the expression 3x + 2y + 4, 3 is the coefficient of x, 2 is the coefficient of y. But, in my example, 4 is not a coefficient, as it is not being multiplied by a variable. It is a fixed value.
  5. 7. any number less than zero.
  6. 9. a letter or symbol representing a changing quantity.
Down
  1. 1. a+b=b+a.
  2. 4. a number or any symbol representing a constant value that is multiplied with the variable.
  3. 8. uses letters (like x or y) or other symbols in place of values, and plays with them using special rules such as addition, subtraction,division and multiplication.