Express each of the following in the form b or bi, where b is a real number
`(x)/(i)`

Answer

To express the given complex number \(\frac{x}{i}\) in the form \(b\) or \(bi\), where \(b\) is a real number, we can follow these steps:

### Step 1: Multiply and Divide by \(i\)
We start by multiplying and dividing the expression by \(i\) (the imaginary unit). This is a common technique to eliminate the imaginary unit from the denominator.

\[ \frac{x}{i} \cdot \frac{i}{i} = \frac{xi}{i^2} \]

### Step 2: Simplify \(i^2\)
Recall that \(i^2 = -1\). Therefore, we can substitute \(-1\) for \(i^2\):

\[ \frac{xi}{i^2} = \frac{xi}{-1} = -xi \]

### Step 3: Express in the Form \(bi\)
Now, we can express \(-xi\) in the form \(bi\), where \(b\) is a real number. Here, \(b = -x\).

Thus, we have:

\[ \frac{x}{i} = -xi \]

### Final Result
The expression \(\frac{x}{i}\) in the form \(bi\) is:

\[ -xi \]