Unit 6: Lessons 2 & 3 Review

What determines whether an equation is true or false?

• The complexity of the equation

• The variable of an equation that determines whether it's true or false

• The number of variables in the equation

• The type of numbers used in the equation

What must be equal on both sides of the equal sign for an equation to be true?

• The number of terms

• The coefficients of the variables

• The values of the variables

• Everything on both sides of the equal sign

If an equation has expressions on each side that have different values, what is the truth value of the equation?

• True

• False

• Cannot be determined

• Sometimes true

Which of the following is a signal word for addition?

• Decreased by

• Divided by

• Multiplied by

• Added to

What signal word would indicate that division is the operation to be used in a word problem?

• Greater

• Per

• Sum

• Difference

When solving equations, what is your goal?

• To find the highest coefficient

• To isolate the variable

• To substitute the variable with numbers

• To balance the equation using a hanger diagram

What must be true for an equation to be considered a true equation?

• It must have variables on one side only

• It must have different values on each side of the equal sign

• It must have expressions with equal value on each side of the equal sign

• It must be solvable without any operations

What do you call the variable that makes the equation true?

• A coefficient

• A constant

• A solution

• A substitute

What must you do to both sides of the equation to solve it and keep it balanced?

• Do the same thing to both sides of the equal sign

• Add the coefficient to one side only

• Multiply one side by the variable

• Divide one side by the coefficient

What is the purpose of the hanger diagram in the context of equations?

• To show that equations must balance out

• To represent the highest coefficient

• To substitute variables with numbers

• To isolate the variable without solving the equation