# In the Following Equation, Find Which Variables X, Y, Z Etc. Represent Rational Or Irrational Number: Y2 = 9 - Mathematics

In the following equation, find which variables x, y, z etc. represent rational or irrational number:

y2 = 9

#### Solution

Given that y2 = 9

Now we have to find the value of y

y2 = 9

rArry=sqrt9

⇒ y = 3

So y is a rational number

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#### APPEARS IN

RD Sharma Mathematics for Class 9
Chapter 1 Number Systems
Exercise 1.4 | Q 5.2 | Page 31