Which expression is equivalent to 2x + 3y - x - (8 + 1)? A.2 + 3y - 9

B.5+2 - 7

C.3 (x + y) - 9

D.6(x + y) – 7

x +3y -9

Step-by-step explanation:

2x + 3y - x - (8 + 1)

Combine terms in the parentheses

2x + 3y - x - 9

Combine like terms

2x-x  +3y -9

x +3y -9

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