substiton of a variable in a equation

syms x

y=input("Enter the equation in terms of x:")

x1=3

now how do i substitute x1 in the equation to get y

lets say equation is => -0.6*x^2+2.4*x+5.5

Answer 1

[madhan ravi]

 subs(equation, x, x1)

[Siva Prasad]

thanks its working