I need help completing the missing value

x= -8

Step-by-step explanation:

Since you know y=8 you plug it into the equation

-4x -8=24

you then add 8 to each side

-4x=32

then divide by -4

x=-8

the missing value is -8, the ordered pair should look like this: (8,-8)

Step-by-step explanation:

1st you must acknowledge that 8 is the y-value in the ordered pair so once you know that you can plug in the y-value into the equation

2nd once you rewrite the equation it should look like this, -4x-8=24

3rd solve for x,

-4x-8=24

+8 +8 -add 8 on both sides

-4x=32

÷-4 ÷-4 -divide by -4 on both sides

x=-8

y=-2.5x+12.5

step-by-step explanation:

5y=2x+10

y=0.4x+2

slope=-2.5

5=-2.5*3+b

b=12.5