Solving systems of equations by substitution y=9*-9 y=9

Question

Virginia Fuentes

Mathematics

6 December, 11:15

Solving systems of equations by substitution y=9*-9 y=9

+1

Answers (2)

Know the Answer?

Diego Ho · Answer 1

Y = 9x - 9

y = 9

9 = 9x - 9

+ 9 + 9

18 = 9x

9 9

2 = x

y = 9x - 9

y = 9 (2) - 9

y = 18 - 9

y = 9

(x, y) = (2, 9)

Ricardo Gamble · Answer 2

Okay, you substitute the y in y=9x-9. It gives us, 9=9x-9. you add nine to both sides to eliminate the - 9 on the right side of the equation. So far we have, 18=9x. Divide both sides by 9. We get 2=x. And thats your answer.