Domain and range of quadratic function y = x^2 + 6x + 7

[honest_denverco09]

What are the domain and range of quadratic function ?
Ex : Find the domain and range of y = x^2 + 6x + 7

Thanks!

[stapel_eliz]

What are the domain and range of quadratic function ?
Ex : Find the domain and range of y = x^2 + 6x + 7

To learn, in general, about domain and range, try here.

In particular, since you can plug any x-value you like into any polynomial, you can plug any x-value into a quadratic.

For the range, take a look at the graph; in particular, look for the vertex, as this demarks the minimum (or, for negative quadratics, the maximum) value of y.

[honest_denverco09]

Thanks a lot! This is a splendid website! ^^