6.7D Equivalent Expressions

Front

What are equivalent expressions?

Back

Expressions that have the same value for all values of the variable.

Front

How do you simplify the expression 4x + 10 - 6?

Back

4x + 4

Front

What is the value of the expression 3(x + 2) when x = 4?

Back

18

Front

If 2x + 3 = 11, what is the value of x?

Back

4

Front

What does it mean to evaluate an expression?

Back

To calculate the value of the expression for a given value of the variable.

Front

What is the first step in simplifying the expression 5x + 2x?

Back

Combine like terms to get 7x.

Front

What is the distributive property?

Back

a(b + c) = ab + ac.

Front

How can you check if two expressions are equivalent?

Back

Substitute the same value for the variable in both expressions and see if they yield the same result.

Front

What is the expression for the perimeter of a rectangle with length l and width w?

Back

P = 2l + 2w.

Front

If you have the expression 4(x + 1), what is the equivalent expression after distributing?

Back

4x + 4.