Question

Can sum1 the please help with where to place them?

Answer 1

Answer: D: x = (-∞, ∞) R: y = (-∞, ∞)

D: x = [0, ∞) R: y = [2, ∞)

D: x = (-∞, ∞) R: y = [-3, ∞)

Explanation:

Domain is all of the x-values

Range is all of the y-values

y = 2x - 1: there is no restriction on x → x = All Real Numbers

there is no restriction on y y = All Real Numbers

y = 2 +
`\sqrt x` : x is restricted by the square root → x ≥ 0

y = 2 + (0 or greater) → y ≥ 2

y = x² - 4x + 3 : there is no restriction on x → x = All Real Numbers

quadratic equation has a minimum at vertex → y ≥ -3