Answer:
II) Both A and R are true, but R is not the correct explanation of A
Step-by-step explanation:
You want to know the relation, if any, between the assertion (A) an equation must have an '=' sign, and the reason (R) it is not necessary to have only one variable in an equation.
Equation
The characteristic of an equation is that it expresses equality between two expressions. If it does not have an equal sign, it is not an equation. A relation with an inequality symbol (<, ≤, >, ≥) is an inequality, not an equation.
The assertion (A) is true.
Variables
An equation may have as many variables as necessary to properly express a relationship. It may have none, one, or more than one. Some examples are ...
- 3 = 1 + 2
- 3 = x + 2
- 3 = x + y
Reason (R) is true, but is not an explanation of assertion (A).
Choice II is correct.
