Let's go through the terms from the image and fill in the blanks:

1. Variable: an unknown quantity or expression whose value can change.
2. Terms: parts of an expression separated by + or - signs.
3. Constant: the part of a math sentence whose value is always the same, represented by a numeral.
4. Coefficient: a numerical or constant quantity placed before and multiplying the variable in an algebraic expression.
5. Expression: a combination of variables, numbers, and/or operations that represents a mathematical relationship, but no statement of equality or inequality. (DOES NOT HAVE AN "=" sign).
6. Equation: a mathematical statement that two or more expressions are equal. (MUST HAVE AN "=" sign).
7. Inequality: an algebraic relation showing that a quantity is greater than or less than another quantity. (> , < , ≥ , ≤).

Would you like more details or have any questions?

Here are 5 related questions to expand on this information:

1. What is the difference between an equation and an inequality?
2. How can you identify the coefficient in an algebraic expression?
3. What makes a constant different from a variable?
4. Can an expression become an equation? If so, how?
5. What is the significance of terms in algebraic expressions?

Tip: Always look for the "=" sign to quickly differentiate between an equation and an expression.