# Math Help - Value of the constant

1. ## Value of the constant

For what value of the constant "c" is the function "f" continuous on (-inf, inf) where:

cy+9 if y e(-inf,4)
cy^2-9 if y e (4, inf)

2. You just need to solve the equation that arises when you set them equal to eachother for y=4

$cy+9=cy^2-9$