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 the value of the constant in the expression @@x - 10@@?

• -10

• 10

• 0

• -5

How do you combine like terms in an expression?

• You multiply the coefficients of like terms.

• You add or subtract the coefficients of like terms. For example, @@3x + 5x = 8x@@.

• You ignore the coefficients and only add the variables.

• You divide the coefficients of like terms.

What is a variable in mathematics?

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

• A fixed value that does not change in an equation.

• A type of mathematical operation that combines numbers.

• A constant that is used to represent a specific quantity.

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 of the expression together.

• Multiply the coefficients by the number of variables present.

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

What does a coefficient represent in an expression?

• A number that multiplies a variable, such as in @@7y@@ where 7 is the coefficient.

• A constant term that does not change in an equation.

• The exponent of a variable in a polynomial expression.

• The sum of all the terms in an expression.

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

• It represents a quadratic equation with two variables.

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

• It represents a linear equation in one variable.

• It represents a polynomial of degree three.

What is the term 'expression' in mathematics?

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

• A single number or variable without any operations.

• A mathematical statement that shows the equality of two expressions.

• A formula used to calculate the area of geometric shapes.

What is the difference between a term and a coefficient?

• A term is a single part of an expression, while a coefficient is the number in front of a variable in a term.

• A term is always a number, while a coefficient can only be a variable.

• A term can only be a variable, while a coefficient is a combination of numbers and variables.

• A term is a mathematical operation, while a coefficient is a type of equation.

• 2

• 5

• 10

• 1