X+y=3
8x+y=-4
system of equation by graphing

x=-1, y=4. (-1, 4).

Step-by-step explanation:

x+y=3

8x+y=-4

y=3-x

8x+(3-x)=-4

8x+3-x=-4

7x+3=-4

7x=-4-3

7x=-7

x=-7/7=-1

-1+y=3

y=3-(-1)=3+1=4

x=-1, y=4. (-1, 4).

a) justify

step-by-step explanation:

justifying is just part of everyday life. justify kind of means proof so i think the answer is a) justify.

relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

it alot will look like this 4.4