It is known that y is positively proportional to the square of X, and when x = 1, y = 2, find the functional relationship between Y and X, and find out the value of y when x = - 3

It is known that y is positively proportional to the square of X, and when x = 1, y = 2, find the functional relationship between Y and X, and find out the value of y when x = - 3

Y=kX^2
2=k*1^2
k=2
Y=2X^2
When x = - 3, y = 2 * (- 3) ^ 2 = 18