Question

Describe domain and range
F(x)= -2x^2-3x+9

Answer 1

First, know that this is a downwards parabola graph.

• Domain is (-∞, ∞) because x can be any value.
• Range has to be (−∞,
  `(81)/(8)`] because the graph reaches a maximum y-value at
  `(-(3)/(4), (81)/(8) )`.