Substitute the value of x into the equation.
Square 1.1 to obtain the following.
Multiply 9 by 1.21.
If a calculator will be used, press the following.
1. Press 9
2. Press (
3. Press 1.1
4. Press )
5. Press ^
In some calculators, instead of the caret (^), they use x².
6. Press 2
7. Press =
Thus, the value of y is 10.89.