153k views
3 votes
Solve the system of equations by substitution y=-2x+18 and 4y-x+9=0

User Effbiae
by
9.4k points

1 Answer

4 votes
  • Answer:

x = 9

y = 0

  • Explanation:

y = -2x + 18

4y - x + 9 = 0

4(-2x + 18) - x + 9 = 0

- 8x + 72 - x + 9 = 0

- 9x + 81 = 0

81 = 9x

x = 81 : 9

x = 9

y = - 2×9 + 18

y = - 18 + 18

y = 0

User Fred Barclay
by
7.3k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories