The following plot shows a function y which varies linearly with x. The value of the integral I = \(\mathop \smallint \limits_1^3 {y^2}dx\) is
1
27
2
32.67
3
35
4
-32.67
The following plot shows a function y which varies linearly with x. The value of the integral I = \(\mathop \smallint \limits_1^3 {y^2}dx\) is