Question

State the domain and range for the function f(x) = 2x^2 - 7

Answer 1

2x^2 - 7

we can plug any values of x into this The domain is All Real x.

The graph will be a parabola opening upwards with a minimum value when x = 0 and f(x) will be = -7

so the range is f(x) <= -7 or (-∞, -7]