Which one is it is it a b c or d

D

Step-by-step explanation:

the x (first number in the ordered pair) cant match with another x

in every other line, the x repeats which makes the function thing make a diagonal line instead. **khan academy explains it well btw**

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb

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