Topic 3 Review

Front

What is a coefficient in an expression?

Back

A coefficient is a numerical factor in a term of an expression. For example, in the term 3x, 3 is the coefficient.

Front

How many coefficients are in the expression 3x + 2y + 7?

Back

There are 2 coefficients: 3 and 2.

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change. In the expression 3x + 2y + 7, the constant is 7.

Front

If c represents the cookies Joe bought, how do you express the amount he split between himself and 3 siblings?

Back

Front

What are the terms in the expression 7x - 6 + 8?

Back

The terms are 7x, -6, and 8.

Front

How do you evaluate the expression 2(a - 5) + 2 when a = 15?

Back

Substituting a = 15 gives: 2(15 - 5) + 2 = 2(10) + 2 = 20 + 2 = 22.

Front

What is the difference between a term and a constant in an expression?

Back

A term can be a number, variable, or the product of numbers and variables, while a constant is a specific number that does not change.

Front

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

Back

Substituting x = 2 gives: 4(2) + 3 = 8 + 3 = 11.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting numbers for the variables.

Front

What is the sum of the coefficients in the expression 5x + 3y - 2?

Back

The sum of the coefficients is 5 + 3 - 2 = 6.