What is the domain and range?

domain: your X values

range: your Y values

Domain = {-2, 1, 2}

Range = {-1, 2, 3}

Step-by-step explanation:

Domain is the set of x values required to find the resulting y values.

From the graph, whatever the function is,

when x = -2, y = 2

         x = 1, y = -1

         x = 2, y = 3  

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a