Find the missing coordinate to complete the ordered-pair solution to the given linear equation.

8y+7x = - 56

(a) (-8,?)

(b) (?,7)

A) x = - 8

x coordinate has been given, we need to find y coordinate of the ordered pair.

By substituting x = - 8 in the equation we can find y

8y + 7x = - 56

8y + 7 * - 8 = - 56

8y - 56 = - 56

8y = 0

therefore y = 0

(-8,0)

b) y = 7

we need to substitute y = 7 into the equation to find x

8*7 + 7x = - 56

56 + 7x = - 56

7x = - 56 - 56

x = - 112/7

x = - 16

(-16,7)