Question

–9x + 9y = 9
y = –7

(
,
)

Answer 1

x=-8

(-8,-7)

Explanation:

–9x + 9y = 9

–9x + 9(-7) = 9 (y=-7)

-9x-63=9

Both side +63

-9x=63+9

-9x=72

Both side divide -9

x=-8

y=-7

(-8,-7)