Question

a. $y \geq 1$
b. all real numbers

1. domain
2. range

lesson 4.1 - introduction to quadratic graphs
week 4

Explanation:

Step1: Identify domain of the parabola

The parabola extends infinitely left and right, so all real x-values are allowed.

Step2: Identify range of the parabola

The parabola opens upward with vertex at $y=1$, so y-values start at 1 and go to infinity.

Answer:

1. Domain: b. All real numbers
2. Range: a. $y \geq 1$