ISEE Word Problems Question 247: Answer and Explanation
Home > ISEE Test > ISEE Word Problems Practice Tests
Test Information
- Use your browser's back button to return to your test results.
- Do more ISEE Word Problems Practice Tests.
Question: 247
11. For what value(s) of y does 
= 0?
- A. y = 3 and y = –7
- B. y = 7 and y = –3
- C. y = 8 only
- D. y = 8 and y = –8
Correct Answer: D
Explanation:
The answer is D
A fraction will equal zero is the numerator equals zero. Here the numerator will equal zero if y2 = 64, as 64 - 64 = 0. There are two values of y that satisfy the equation: ±8.
Test the answer choices. Choice (A) will create a fraction that is undefined. Choice (B) will not result in a fraction that equals 0. Choice (C) will result in a fraction that equals zero, but you need to test choice (D) as well in case that is a more complete answer. In fact, choice (D) is more complete, as both values result in a fraction that equals zero.