Identify parts of an expression

What does the term 'evaluate' mean in mathematics?

• To calculate the value of an expression by substituting numbers for the variables.

• To simplify an expression without calculating its value.

• To compare two expressions and determine which is larger.

• To graph an expression on a coordinate plane.

What is a constant in an expression?

• A variable that can change value

• A fixed value that does not change

• A term that represents an unknown

• A coefficient in a polynomial

What is the difference between an expression and an equation?

• An expression has an equal sign and represents a value, while an equation does not.

• An expression does not have an equal sign and represents a value, while an equation states that two expressions are equal.

• An expression is a type of equation that includes variables, while an equation is a fixed statement.

• An expression can only contain numbers, while an equation can contain both numbers and variables.

What does a coefficient represent in an expression?

• A coefficient is a number that multiplies a variable. For example, in @@7y@@, 7 is the coefficient.

• A coefficient is a constant term in an equation.

• A coefficient is the variable itself in an expression.

• A coefficient is the sum of all terms in an expression.

What is the role of parentheses in an expression?

• Parentheses indicate which operations to perform first in an expression.

• Parentheses are used to group terms that should be added together.

• Parentheses are only used in equations, not in expressions.

• Parentheses have no effect on the order of operations.

• -10

• 10

• 0

• -5

What is a variable in mathematics?

• A constant value that does not change.

• A letter or symbol that represents an unknown number. For example, in the expression @@x + 3@@, x is a variable.

• A type of equation that has no solution.

• A fixed number used in calculations.

How do you identify the number of terms in an expression?

• Count the number of separate parts in the expression. For example, in @@7x + 5^3 - 1@@, there are 3 terms.

• Add all the coefficients in the expression.

• Multiply the coefficients by the number of variables.

• Identify the highest power of the variable in the expression.

What is the term 'expression' in mathematics?

• A mathematical statement that is always true.

• A combination of numbers, variables, and operators that represents a value.

• A rule that defines how to solve an equation.

• A type of function that maps inputs to outputs.

What does the expression @@3x + 4y - 2@@ represent?

• It represents a quadratic equation.

• It represents an algebraic expression with three terms: 3x, 4y, and -2.

• It represents a linear equation with two variables.

• It represents a polynomial of degree three.