Write down the coefficient of
(i) x in 9 xy (ii) a in - 7 abc (iii) xyz in - xyz (iv) b in - abc

Explanation

To solve the question, we need to identify the coefficients of the specified variables in each expression. A coefficient is the numerical factor that multiplies a variable in an algebraic expression.

Let's break down the question step by step:

### Step 1: Coefficient of x in 9xy
- The expression is **9xy**.
- Here, the variable **x** is multiplied by **9y**.
- Therefore, the coefficient of **x** is **9y**.
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