1-9 Simplifying Algebraic Expressions
    Warm Up
    Evaluate each expression for y = 3.
    1. 3y + y          12
    2. 7y              21
    3. 10y – 4y        18
    4. 9y              27
    5. y + 5y + 6y     36
    6. 10y             30
 Course 2
  1-9 Simplifying Algebraic Expressions
    Problem of the Day
    Emilia saved nickels, dimes, and quarters in 
    a jar. She had as many quarters as dimes, 
    but twice as many nickels as dimes. If the 
    jar had 844 coins, how much money had 
    she saved?
    $94.95
 Course 2
  1-9 Simplifying Algebraic Expressions
   Learn to simplify algebraic expressions. 
 Course 2
  1-9 Simplifying Algebraic Expressions
                   Vocabulary
      term
      coefficient
 Course 2
  1-9 Simplifying Algebraic Expressions
     In the expression 7x + 9y + 15, 7x, 9y, and 15 are 
     called terms. A term can be a number, a variable, 
     or a product of numbers and variables. Terms in an 
     expression are separated by + and –.
          7x    +    5    –    3y2  +   y +    x
                                               3
         term       term       term term term
     In the term 7x, 7 is called the        Coefficient      Variable
     coefficient. A coefficient is a 
     number that is multiplied by a 
     variable in an algebraic 
     expression. A variable by itself, 
     like y, has a coefficient of 1. So 
     y = 1y.
 Course 2