Question 1: Identify the terms in the expression: 3x + 4 - 7y + 5.

Answer: ["3x","4","-7y","5"]

Question 2: What is the coefficient of x in the expression 5x - 2?

Answer: 5

Question 3: Identify the variable in the expression: 8a + 3.

Answer: a

Question 4: Which part of the expression 6b - 9 is the constant?

Answer: -9

Question 5: Identify the mistake in this statement: 'In the term 4x, 4 is the variable.'

Answer: The mistake is that 4 is the coefficient, not the variable.

Question 6: Rewrite the expression 7x + 3 as a sum of terms, clearly identifying the coefficient, variable, and constant.

Answer: {"terms":[{"term":"7x","variable":"x","coefficient":"7"},{"term":"3","constant":"3"}]}

Question 7: Explain why 5 is called a constant in the expression 2a + 5.

Answer: Because it is a number that does not change and is not multiplied by a variable.

Question 8: Given the expression -3x + 8, identify the term, coefficient, variable, and constant.

Answer: {"term":"-3x","constant":"8","variable":"x","coefficient":"-3"}

Question 9: A student claims that in the expression 12y - 7, '12y' is a constant. Is this correct? Explain your answer.

Answer: No, '12y' is a term with 12 as coefficient and y as variable. The constant is -7.

Question 10: Identify and correct the mistake: 'In the expression 9x + 4, 9 is the variable.'

Answer: The mistake is that 9 is the coefficient, not the variable. The variable is x.

Question 11: Construct an algebraic expression with one term, where the coefficient is -5, the variable is z, and the constant is 10. Write the expression and label each part.

Answer: -5z + 10

Question 12: Challenge: Given the expression 4x - 3 + 2x, simplify and identify all terms, coefficients, variables, and constants. Explain your steps.

Answer: Simplify to 6x - 3. Terms: 4x and 2x; coefficients: 4 and 2; variable: x; constant: -3.