The expression \(-1 \times y\) simply means that \(y\) is being multiplied by \(-1\). 

The result is:

\[
-1 \times y = -y
\]

So the expression simplifies to \(-y\), which is the negative or opposite of \(y\).

Would you like further details or have any questions?

Here are 5 related questions:
1. What is the result of \(-1 \times 5\)?
2. How does multiplying by a negative number affect the sign of the result?
3. What is the value of \(y\) if \(-y = 7\)?
4. What is \(-2 \times y\), and how does it differ from \(-1 \times y\)?
5. How does multiplying two negative numbers, like \(-1 \times (-y)\), affect the result?

**Tip:** Multiplying any number by \(-1\) flips its sign (positive to negative or vice versa).

Explore how multiplying by -1 affects a variable in the expression -1 × y. Learn how the result of this operation, -y, flips the sign of y. This guide explains the concept of negative multiplication and includes related questions for further understanding. Ideal for students in Grades 5-7.

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