Equation and Expression Vocab Terms

A Variable is....

• a letter

• a letter that stands for a number
  

• a coefficient

• an expression

Given x + 2. If I told you that x = 3, then you can

_____________________

to solve the expression

• coefficient

• variable

• equation

• substitute

Substitute means to....

• replace

• inverse

• solve

• variable

A Coefficient....

check all that apply

• goes at the end

• goes in front

• stands for add

• stands for multiply

• stands for divide

Which example shows 5 as a coefficient, which still mean "5 times x" or "x times 5" 

•  $\frac{x}{5}$  

•  $5^x$  

•  $5x$  

•  $5\ +\ x$  

A fraction bar means to.....

• add

• subtract

• multiply

• divide

What IS an INVERSE operation....

• The same operation

• The opposite operation

• What you do to one side, you do to the other

• Canceling Out

What is the GOAL of an equation?

• Find an answer

• Do an inverse Operation

• Solve for the variable

• Substitute

Which order is correct when solving an equation....

• 1) Identify the operation

  2) Get the variable by itself by doing the inverse operation

  3) Inverses (Opposites) Cancel

  4) What you do to one side, you do to the other

  5) Solve for the variable

• 1) Identify the operation

  2) Get the variable by itself by doing the inverse operation

  3) Inverses (Opposites) Cancel

  4) What you do to one side, you do to the other

  5) Substitute for the variable

WHY do we do the step "What you do to one side, you must do to the other?" in an EQUAtion.

To keep the equation....

• centered

• balanced

• inversed

• substituted